2005 cadillac cts ecm problems. 2005 Cadillac CTS-V 5.
2005 cadillac cts ecm problems. Help me here Thanks, Learn how to reset or reprogram any Cadillac computer including ECM, ECU, TCM, and PCM. It I’m trying to fix the ecm on my car one it’s not working. Mar 2, 2020 · I'm just looking for some general tips or advice for troubleshooting "No Communication" with 8 modules preventing the car from starting, notably the ECM and TCM. . I'm having a hard time locating the PCM in my caddilac. Common Cadillac CTS Starting Problems and Fixes Cadillac CTS owners have reported a few common starting problems. Nov 27, 2021 · The charging system on the CTS is way more than just the alternator. 6 needing to consume oil. 6liter engine. 6L Engine Computer PCM ECM ECU Programmed Plug&Play | 12592124 - Shop high-quality, pre-programmed OEM engine control modules and more for your vehicle at our store. Most Cadillac vehicles have an on-board computer, or ECM, that tracks many aspects of the vehicle and driving conditions. The alternator follows this request and sends a PWM signal back to the ECM. Jul 16, 2019 · Electrical Issues Electrical issues with the fuel injectors can also hinder your Cadillac CTS’s performance. Car has 11. No starter signal at starter relay but when jump relay will turn over but not start. 0 reliability rating. From what Ive gatheredm it is a ECM issue, and you will need a new one. If you’re unsure or uncomfortable with accessing or replacing the ECM, consider taking your CTS to a certified mechanic. First, the technician will scan the car with the adequate diagnosis equipment to check if the problem is actually related to the immobilizer system. Now the new problem is after the CTS V runs great several times the ecm stops working,the key security sys. 8L w/manual transmission which had been dormant for about 2. 2003-05 Cadillac cts ECM replacement part 1 r1devil81 Florida life 661 subscribers Subscribe Mar 6, 2005 · Re: Starting Problems Cadillac CTS 2005 3. I seem to recall Cadillac/GM redesigned the valve [ Acura ] [ Alfa Romeo ] [ Audi ] [ BMW ] [ Buick ] [ Cadillac ] [ Chevrolet ] [ Chrysler ] [ Citroen ] [ Daewoo ] [ Daihatsu ] [ Dodge ] [ Eagle ] [ Ford ] [ Freightliner ] [ GEO ] [ Genesis ] [ GM ] [ GMC ] [ Honda ] [ Hummer ] [ Hyundai ] [ Infiniti ] [ Isuzu ] [ Jaguar ] [ Jeep ] [ Kenworth ] [ Kia ] [ Lamborghini ] [ Land Rover ] [ Lexus Nov 20, 2007 · I have been hunting down a wicked electrical problem for the last few months, and finally resolved it last night. Never really ran right after. Mar 25, 2021 · Hello, My CTS needs a new ecm, I can find plenty online but they all have different part numbers. Other years to avoid include 2007, 2008, 2009, 2011, 2013, 2015, and 2018 because they have been known to have engine, transmission, and electronic control module (ECM) problems Dec 16, 2024 · After getting the right ecm (part number same) the learn procedure works. Jul 16, 2018 · 2005 CTS PCM wiring diagram Need to replace the wires running to the purge valve on the evap fuel canister anyone have a link to a diagram or pictures. 6L AUTOMATIC 150,000 MILES Apr 19, 2011 · I just bought a 2004 CTS 3. Jan 16, 2023 · What are the reasons for anti-theft system problems in the Cadillac CTS? In most cases, it originates from the ECM. 6L, auto trans with 120,000 miles on it. After the issue that generated the fault code is repaired or resolved, the engine control module Dec 11, 2024 · 2005 CTS 3. 6 L engine My girlfriends 05 CTS is having the same issues. Are free eBooks of good quality? Yes, many reputable platforms offer high-quality free eBooks Replacement OEM Engine Computer (ECM,ECU,PCM) for a 2005 Cadillac CTS-V 5. 7L pre-programmed to your VIN. Nov 22, 2018 · I have a 2005 cts 3. I had got the "Service Theft System" on the DIC and also notice the Replacement OEM Engine Computer (ECM,ECU,PCM) for a 2005 Cadillac CTS 3. I've changed allot of parts including the computer. This unit is also compatible with the following service number 12583659. Sep 7, 2018 · 2008 CTS - No Turn Signals, High Beams, Hazards & Hood Open Msg after Trunk repair Hi all. The worst complaints are engine, brakes, and accessories - exterior problems. Jun 11, 2015 · First let me apologize, I know there are several posts and threads about this very issue, but I need help. Ensure your vehicle’s systems are running optimally with our VIN & Firmware Update Programming service. S. Got the ECM, installed Jun 21, 2021 · U0100 is a generic diagnostic trouble code, meaning it has the same definition for any vehicle made in the 1996 model year or newer (including the Cadillac CTS). Do I have to get one that has the same # as mine in order to program it? Mar 25, 2022 · Here are the top 5 Cadillac CTS problems that we have encountered repeatedly. 7L models with matching computer service number 12586243. 6L engine size and matching part number 19260507. 6L) because I was having issues with the key being stuck in the ignition, and later the car not turning on Mar 27, 2024 · The CTS has plenty of room for passengers and cargo, with a spacious cabin and a large trunk. Final Thoughts on the ECM Understanding the ECM’s location and function in your 2005 Cadillac CTS is empowering. I would start by checking the underhood fuse box for popped fusese or damage. If the black wire that connects the Engine Control Module (ECM) is burnt, it could indicate a problem with the electrical system in your 2005 Cadillac CTS. 5 out of 5. 6 same issue as above key stuck in the ignition having to manually release it antitheft light on traction control light on no fuel guage or temp gauge had a programmer come and reset the theft system and try and update my ecm and no luck had to get a salvage ecm hoping this will work came from a wrecked car Cadillac 2005 cts Ecm Problem heres some help React to this axb 490 subscribers Subscribe Customer: Changed ecm on 2005 Cadillac cts. First off I want to say hello and thanks for any help in diagnosing my problem. Feb 6, 2012 · The ECU improves on previous throttle based management systems by using a torque and horsepower control strategy instead of relying on the throttle position sensor alone to govern throttle operation. I backed the car out of the garage and shut it off on the driveway; a couple of hours later, I went to put the car back in the garage and it would not start or let me pull the key out of the lock and the theft deterrent icon appeared on the dashboard. Discover our extensive range of Cadillac CTS Engine Control Modules (ECMs), the heart of your car's powertrain. I don't know if your 2005 had it, but the 2003-04 sure did. thank you for watching!!!!!If this video was helpful to you and if you would like to place a donation, here is my Venmo and PayPal information. 6L ECM replacement guide 3. Got this new Bluetooth dongle called Thinkcar that scans all modules. Note that 12592124 is the hardware PN and the 4 letter code on the ECM is the software code. The most recently reported issues are listed below. Even a luxury vehicle like the Cadillac CTS will I had to replace the ECM on my 06 Cadillac CTS (3. CaddyInfo. Apr 28, 2025 · Cadillac has implemented several generations of anti-theft technology over the years, each with different reset procedures. Or I would re FAQs About 2005 Cadillac Cts Ecm Problems Books How do I know which eBook platform is the best for me? Finding the best eBook platform depends on your reading preferences and device compatibility. Don’t buy a new or used replacement part, send your original part to UpFix for repair and save $100s! May 12, 2008 · this is a copy of my post from another forum: I've had an ongoing problem with my 05 STS not starting. Jun 16, 2022 · Ok, guys, I finally have a problem I need some advice on. The CTS also comes standard with a variety of features, such as heated front seats, dual-zone climate control, and an infotainment system. 6 V6 2005 CTS, all involving the security light. 05 Cadillac CTS I would like an experts opinion on what may be the cause w/ the info I found so far. Mar 23, 2022 · What are the most common Cadillac 3. No check engine light. Has anyone had this problem?? May 8, 2023 · Cadillac Forums is the perfect place to go to talk about your favorite Caddys including the ATS, CTS, SRX, Escalade, LYRIQ, Vistiq, concept and future Cadillac models. An ECM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password. They have the tools, knowledge, and experience to diagnose and repair any ECM-related problems efficiently. Think of it as a software version designation. For example, the 2003 and 2005 models often have engine and timing chain issues that can be expensive to fix. All instrument light on when first to key on the go out except battery & gauge warning light stay on Programmed new ECM will not start KWHITE0818 MEMBER 2005 CADILLAC CTS 3. Oct 6, 2017 · Communication with the ECM works fine. This Engine Computer also referred to as an Engine Control Module (ECM), Engine Control Unit (ECU) & Powertrain Control Module (PCM) is a guaranteed replacement for all 2005 Cadillac CTS PCM models with a 3. Research different platforms, read user reviews, and explore their features before making a choice. The number one most common problem is related to the electrical system (24 problems). Faulty wiring or damaged electrical components can cause the injector to send an incorrect signal to the engine control module (ECM), leading to a poor fuel-to-air ratio. Does anyone have a Nov 15, 2017 · 2013 CTS V AT 680WHP/704TQ - SOLD - 2. Is the procedure this: disconnect battery remove old ECM install 3 connectors, clean and free of debri reconnect battery Flash appropriate BIN file? or is there a step I'm missing? I have a replacement ECM that should have my BIN file on it and ready to fire up Sep 4, 2013 · i have a 2007 Cadillac cts base 3. The ECM controls the alternator by sending a PWM signal to the alternator. Feb 28, 2016 · Hi everyone. But they're all the same. 2L engine Won't start or turn over. Also, see repair breakdown by problem area and cost. Nine problems related to electronic stability control have been reported for the 2005 Cadillac CTS. Get your 12595777 & 12592124 modules programmed and ready for installation. Apr 18, 2008 · Hi, My 2003 CTS was diagnosed with a bad PCM/ECM however the dealer is having a hard time finding one. " 2) "Those CTS ECUs sometimes developed bad grounds. Common signs of ECM problems in a 2005 Cadillac CTS include engine stalling, poor fuel economy, and difficulty starting the car. I want to document my experiences, symptoms, and solutions so that if anybody else encounters this problem in the future, they can save themselves a lot of money, and a LOT of frustra Offering top-quality Plug&Play OEM Engine Computer PCM ECM ECU and Transmission Modules for 2005 Cadillac CTS 3. Mar 14, 2023 · Most GM vehicles built in the last 20+ years have a theft deterrent system, that includes the Cadillac CTS. 6l cts ecm pcm replacement Jump to Latest 13K views 5 replies 3 participants last post by Frankrodelli Dec 11, 2024 Dec 30, 2024 · If you’re thinking about buying a Cadillac CTS, watch out for certain years that have more problems. 6L engine size and matching part number 12596577. 6L. The YLTT is the software Sep 12, 2023 · I've experienced similar problems on my 2005 CTS and changed the BCM, Theft Module and the ECM twice with no permanent fix till I stumbled upon this GM tech bulletin. Replaced battery but didn't help Jun 29, 2010 · Hello, I have a 2005 Cadillac CTS which has two trouble codes: P0455 and P0451. 8L V6 (RPO LP1 - VIN T) engine, have an Engine Control Module (ECM) programming error, which can cause ECM memory damage resulting in the inability to start the Mar 19, 2019 · 2005 Cadillac cts ECM replacement part 3 r1devil81 Florida life 633 subscribers Subscribed Aug 19, 2012 · Just bought '03 CTS 2 months ago. 5 Upper Pulley, RPM 6" Intake, FasterProms Flex Fuel E85, FasterProms CAI Block off Panels, FasterProms Heat Expansion Tank, 850cc Injectors, Thermal reduction Plates, Billy Boat Exhaust, Cats Delete, QTP Cutouts, Eibach Coupe Lowering Springs, Nitto Nt05r. Knowing which system your vehicle has is the first step toward solving the problem. During the bad weather we had here in the Boston area over the winter, I didn't drive my CTS for two months. These problems might indicate underlying issues with the engine or electrical system, affecting the car’s overall reliability. This module belongs to the hardware code 19260507. The only way I can get it back running is to RESET the ECM by removing the ecm fuse and back on. 7L. One of the most frustrating and potentially costly problems you might encounter is a malfunctioning Engine Control Module Aug 22, 2020 · A suggestion from elsewhere on the Internet? Intuition? What? My wild-assed guess, based in the fact that with the old ECM the engine would crank and, with the new ECM it won't, is that you may have a problem with GM's "Immobilizer System" which, even when working properly, is sensitive to the procedure used when changing an ECM. Everything powered off but the car kept driving until i shut it off. Jun 29, 2017 · 1) "Those early CTS were known to have bad engine bay wiring harnesses. Jan 5, 2006 · All 2004 Cadillac CTS, SRX; Buick Rendezvous and certain 2005 Cadillac CTS, SRX, STS; Buick Rendezvous, LaCrosse / Allure model vehicles, equipped with a 3. 6 engine Mechanic's Assistant: Are you fixing your CTS yourself? What have you tried See real-world 2005 Cadillac CTS engine problems and repair histories as reported by other 2005 Cadillac CTS owners. This status is not permanent as some times these symptoms disappear. It wont start because the factory security system is engaged, and there is no way to shut it off. The second most common problem is related to the ignition switch (five problems). Current issue: theft protection stuck on (traction control locked in off, doesn't recognize being in park or reverse, AC compressor not coming on, no temp/fuel gauge, have to use manual How to disable or reset Cadillac CTS theft system or ECM. As the title states I have a NO start NO crank condition. Any one have some info on resetting this? This Engine Computer also referred to as an Engine Control Module (ECM), Engine Control Unit (ECU) & Powertrain Control Module (PCM) is a guaranteed replacement for all 2005 Cadillac CTS PCM models with a 3. The lights and all acceseries would work fine, but when I would hit the start button, nothing, just the orange engine light for 20 seconds, then ev Sep 16, 2013 · Well the later model CTS seem to have less oil consumption issues so I think that counters your indies thoughts on the 3. my question to the forum is, every since my traction contro & Anti theft light came on the car has had very poor performance. Oct 5, 2016 · Out of the blue, my mildly modded CTS-V did not start earlier this week. 6 engine problems? The most common Cadillac 3. I have replaced the gas cap and still have this problem. 2005 Cadillac CTS-V Engine Control Module (PCM/ECM/ECU) Plug&Play Programmed, Flashed & Updated with the latest OEM Software Updates from the car manufacturers. Oct 7, 2012 · If your battery is to old, better spend money on a new one than spending a lot more money on changing the ECM, ECU, or any other electronic device in your car. From what Ive read on here, its a very common and frustrating problem. See full list on 700r4transmissionhq. Contrary to some posts I have read on here that pulling the battery terminal off for a few hours or even overnight will reset the PCM and TCM to clear the 'learned' characteristics, this is not the case. 12593780 | 2005 Cadillac CTS 3. In this video I explain why your ecm/pcm is not communicating with scan tool or the ecm is not communicating with the tcm, bcm, abs module etc If you're r Mar 31, 2020 · after doing some research on this problem I assume an ECM replacement is needed. Had to replace the ecm, went to dealer and had it programmed for 100$, still same issues, dash freaking out, locks locking and unlocking, radio and gauges will lose power periodically, gas pedal code, check security warning. When a vehicle has Jun 12, 2017 · Assume I have a new ECM. After it sitting for a month I had it worked on and had the MAF sensor and purge system This Engine Computer also referred to as an Engine Control Module (ECM), Engine Control Unit (ECU) & Powertrain Control Module (PCM) is a guaranteed replacement for all 2005 Cadillac CTS PCM models with a 2. I unplugged everything from the ODBII port, disconnected the battery for 1/2 hour, checked the plug / wires / pins / connector in the trans and blew some air in them to remove any possible debris, cleaned the battery posts and trunk ground, cleared the codes and it comes back immediately when I turn the Aug 11, 2014 · What options do I have here? Background of the car is a 2005 CTS-V with a Maggie and a tune. I picked up a 2008 CTS about a week ago (which I LOVED), except the trunk would not open with the door button or key fob. Did normal maintenance of vehicle, oil change spark plugs . The problem apparently relates to cylinder 1 misfires (at least that is what the OBD II system reports). Yes the key is in the ON position and engine OFF, I have tried all types of configs of key position to get the OBD II reader to connect to the ECM. The car still will go into gear and move Feb 10, 2025 · The 2005 Cadillac CTS seems to have some issues with reduced power and the check engine light popping on, which can be pretty frustrating. This Engine Control Module replacement is a direct fit for all 2005 Cadillac CTS-V models. The BCM determines what the alternator output should be at any given moment and sends requests to the ECM. May 9, 2025 · The Cadillac CTS is a luxury car known for its low ownership costs and great gas mileage. About 2 months ago my car's (cts) electrical system would "reset" while I'm driving. 6 early on that made it more prone to ingest oil, whereas evolutions in later versions seem to have lessened oil consumption. Mar 17, 2021 · Hello, this is 2010 Cadillac cts sedan 2wd, 3. The ECM is also called the Engine Control Module. P. Some common problems of the Cadillac CTS include loss of power due to illuminated StabiliTrak and trac control lights, issues with interior accessories, and premature light bulb failure. Replacing the ECM in a 2005 Cadillac CTS involves disconnecting the battery, locating the ECM under the hood or passenger side, and carefully unplugging connectors. Please also check out the statistics and reliability analysis of the 2005 Cadillac CTS based on all problems reported for the 2005 CTS. Fast & easy process. When I did go to Oct 20, 2016 · 2005 CTS issues please help. The ECM is located in the left front of the engine compartment. What do I do Aug 7, 2022 · Like the title say I am having a issue with the theft detorant system and can not start my car. May 1, 2017 · The car probably has 50+ ECM rewrites on it, but after the recent head swap I am keeping an eye peeled for bad grounds but given the rarity of the failure and how it is not tied to any specific circumstance I suspect the ECM itself is the most likely issue. By updating the Vehicle Identification Dec 28, 2010 · Re: Check Engine Code U0100 Hey Tomm heres anything and everything GM says about it Document ID# 1423498 2005 Cadillac STS -------------------------------------------------------------------------------- DTC U0100-U0299 Circuit Description Modules connected to the high speed GMLAN serial data circuits monitor for serial data communications during normal vehicle operation. Head gasket was replaced by previous owner. Low-cost car computer repair and replacement for Cadillac ECU / PCU / TCU. 6 engine problem arrives from the “Change engine oil” message that arrives too late. Get Yours Today! We have the best products at the right price. I did find a used one, but I don't know if it can be In this video, you will learn 4 symptoms of a bad or failing engine control module. My car is 2005 CTS 2. com We Need You! Reading the Cadillac Onboard Diagnostic Codes If you have a problem, why not ask the Cadillac what's wrong? One wonderful feature of most Cadillacs, including the Deville / DTS, the Seville / STS, and the Catera / CTS up to 2003, and the Allante, is the availability of onboard diagnostics. Customer: 2005 Cadillac CTS, wont start, wont crank, no check engine light illuminates when key is turned to on. I was May 3, 2015 · Theft system will not go off - I have a 06 Cadillac cts the theft lock comes on out the blue and will not turn off. Feb 7, 2020 · Had an engine, along with ECM, replaced about 2 years ago. Dash shows check engine light, stabilitrqck, awd O4 Cadillac CTS I just replaced the ecm brand new and it fixed a few problems. 6 L. This module belongs to the hardware code 12592124. locks . As a result, the vehicle has to endure operating on less engine oil for a prolonged period of time, leading to issues with valve timing, and in-cylinder mixture maintenance. When accelerating uphill, the car shudders like it is losing and regaining power and the check engine light (CEL) flashes. Nov 23, 2018 · So twice now, under random conditions, and spaced apart by about a week and a half, I've had different issues in the cab of my 3. I went to turn it off and the key would not release. 8L engine size and matching part number 12595125. engine and tranny feels sluggish, I can feel the upshifts and downshifts but not to hard and jerky and car has had an overall loss in power Jul 10, 2018 · First off I would like to say hello and thank you for having me. 100% money-back guarantee, includes one year warranty plus get free shipping on all orders. 9v on the DIC. Its sleek design and powerful engine make it a head-turner. Jul 1, 2017 · There are 2 questions in here, one regarding a replacement ECM, and the other about a temporary reset. This services requires that you send us your part (s) for programming, firmware update or VIN change. have a code for incorrect voltage. After the reflash the only codes that came back we're P2105 and generic P0700. About a year ago, I was driving back from a trip and pushed the car pretty hard, and after stopping at a station when I restarted the car, the Customer: Is it difficult to replace a 2005 Cadillac CTS ECM? Should I let the dealership do it, even though the they would likely charge a lot. 2005 Cadillac CTS-V 5. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. Mar 21, 2022 · Thanks for your info, The BCM Body Control Module is behind the glove box on my 2005 STS It’s a black plastic box (3 plug-ins) Or Are you talking about the ECM ENGINE COMPUTER Module/ PCM on front of engine, it’s made of metal with 2 plug-in locations. Engine Computer fitting all 2005 Cadillac CTS-V 5. The battery ended up going dead by the time we figured out how to release it from under the steering column. 6L i was driving when all of a sudden the dash lights flickered then shut off along with my head lights. Each control unit is specifically programmed using your Vehicle Identification Number (VIN) to ensure seamless communication between all Nov 5, 2018 · 2005 Chevy Trailblazer LT, 2-Door, 4WD, I6 4. Unable to connect to the ECM have no communication vehicle wont start Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded? Yes new battery,new starter,and ,new altenator Mechanic's Assistant: What is the model/year of your Cadillac? 2005 Cadillac CTS 3. I borrowed a Tech2 today and am getting the following codes: U0100 Lost communication with ECM U0121 Lost communication with Electronic Brake Control Module C0561 (related to a wheel speed sensor that was damaged) I've This is a programming/VIN & Firmware service of your existing Cadillac CTS 2005-2025 ECU/ECM VIN Programming | Firmware Update. If not, than go to your dealer, but make sure you have a lot of money in your pocket. Now when i try to start it i put the key in it makes the chime when the doors open the lights on the This is a Repair and Return Service for your existing Cadillac CTS 2004-2005 Engine Control Unit (ECU/ECM) Repair. About a month ago, my car just wouldn't start. After doing a scan, found that there are tons of electrical Shorts throughout all of vehicle, including 14 out of the ECM. It's a 2005 STS with a 3. But like any vehicle, even a luxury car like the CTS can experience its fair share of issues. The Engine Control Module (ECM) monitors the position of both camshafts and the crankshaft. Read the article to learn more. May 30, 2015 · After replacing a damaged battery, I got some troubles with my car. Vehicle sat unused for a year. All modules are VIN programmed, flashed and updated with the latest dealer software to improve drivability and fuel mileage. Check engine light has been on since purchase, and just yesterday the gas gauge read empty with gas in the car. Watching this video will help you diagnose to see if it's time to replace your engine control module. The issue to me seems to be more about design characteristics of the 3. Thanks to our extremely fast and easy process, most repairs take 1 working day. Feb 8, 2019 · I have a 2005 CTS that just developed an ECM problem. Bet you didn't know where it was but, no worries, I got you covered! I go over it's location and removing it. com Nov 13, 2023 · Sounds like you are having problems with the GM LAN that the ODBII port uses to communicate with the various modules in the car. If you’re considering this model, it might be worth checking if these issues have been addressed in any maintenance records. While driving, the fuel appears not injected properly or a spark (coil) is not working and the check engine light start blinking. When first returning to the car the battery was completely dead. Kevin Nadeau, how to, timing chain,2007 cadillac cts,2007 cadillac cts timing chain replacement, camshaft position sensor, camshaft position sensor location, p0009, p0016, p0018, p0019, timing How can I fix an immobilizer problem on a CTS? Since this system is delicate, it is advisable to leave this process in the hands of a specialist. The 2005 Cadillac CTS has 406 problems & defects reported by CTS owners. Reply 1: Hello, There are two different 2005 Cadillac CTS ECM Problems: A Comprehensive Guide Owning a 2005 Cadillac CTS is a dream for many car enthusiasts. " My car is a manual, every other CTS is likely to be an automatic. Operating information Most common problem to burnt compressors is the bags on shocks tearing so int keeps trying to put air into the shock. 2004-2007 Cadillac CTS or SRX Engine Computer Repair Kit. This 2005 Cadillac CTS-V PCM/ECM/ECU is a guaranteed replacement for all vehicles with a 5. What also may be a problem is the ECM/PCM has a problem and it can't talk to the suspension control module so it doesn't know what it's doing. 7L engine size - Lifetime Warranty & Free shipping on every order. Many different situations will trigger the computer to display a warning on the instrument panel. 8v. Apr 29, 2016 · A 2009 cadillac cts where is the computer at under the hood or in the car passenger side 1 people found this helpful. For the last few weeks Ive been trying to pin point why we are getting the U0100 Lost Communication with Ecm. We not only offer OEM parts but also provide top-tier repair services for ECMs, ensuring your Apr 26, 2020 · My Cadillac is having problems I hit a pot hole an now my car is throwing off all these check engine lights service charging system service auto theft ac hot engine off already replace the thermostat sensor an is till poping on an off can a big enough pot hole couse a ecm to go out How reliable is the 2005 Cadillac Cts? Explore all the popular car problems, read 282 complaints and 6 recalls, and read 41 reviews from real 2005 Cadillac Cts owners. So I did the research and found the many threads about the wires breaking inside Apr 28, 2022 · This post covers common 1st gen Cadillac STS problems for model years 2005 to 2011 and their causes, symptoms, and fixes, such as a bad MAP sensor and EVAP codes. 6 liter motor! Can anyone help! Thanks! If the black wire that connects the Engine Control Module (ECM) is burnt, it could indicate a problem with the electrical system in your 2005 Cadillac CTS. No signal to coil/s or injector/s as a result of a faulty engine computer in your 2004-2007 Cadillac CTS or SRX?. RepairPal gave the Cadillac CTS a 3. Radio would turn off and 2005 Cadillac cts ECM replacement part 2 r1devil81 Florida life 645 subscribers Subscribed Table 1 shows eight common electrical system related problems of the 2005 Cadillac CTS. The car runs, but the ECM doesn't fire injector #1 any more. If your key is stuck or it won't start see my other video. You can follow the tips provided to resolve the trouble codes. Mar 10, 2019 · I am having the same problem with my 06 CTS 3. 6L V6 (RPO LY7 - VIN 7) or 2. 6L with Part # 12600794. This module belongs to the hardware code 12600940. 7L Powertrain Control Module (PCM/ECM/ECU) - Automotive ECM PCM Repair and Sales - PCM for a 2005 Cadillac CTS-V 5. I have a 2005 CTS 3. When your vehicle CTS theft deterrent system message, the system will not let Dec 15, 2021 · So I am pretty stumped. Dec 15, 2019 · What gives you the impression that the ECM (Engine Control Module ??) needs replacement ? Please explain the diagnosis/trouble codes for one of our early CTS gurus. That would explain your jumpering in the fuse box working. Dorman makes the compressors with a safety shutoff so that doesn't happen. I replaced the coil and the injector in 4. The generic number for this module is: 12600940. Steps to troubleshoot ECM problems in a 2005 Cadillac CTS include checking for blown fuses, loose connections, and damaged wiring. Basically everything shuts off and restarts right away. Oct 25, 2017 · P0009 CADILLAC - Engine Positions System Performance Bank 2 P0009 - The ECM detects that both camshafts on either bank of the engine are mis-aligned with the crankshaft for more than 4 seconds or a cumulative of 50 seconds. Most of the problems should be solved. We will restore your malfunctioning CADILLAC EU ECM and return it to you. Jan 21, 2011 · This is a long post but I want to really describe what's happening sorry. Scanner shows no applicable codes and does not communicate with ecm or BCM. This diagram should help. 6L cts not wanting to start. Follow me on Instagram: GTSAMAUTOMusic By: Trac Where is the ecm located in 2005 cadillac cts and how easy is it to take out and put a new one in. I just bought my daughter her first car a 2005 Cts Limited Edition. Each ECM, also known as a Powertrain Control Module (PCM) or Engine Control Unit (ECU), is programmed with utmost precision to maximize your Cadillac CTS's performance and efficiency. No change to conditions even with jumper cables and 13. Apr 8, 2019 · Replaced the ECM , changed the the spark plugs and spark plug wires, change the CAM sensors, why is the check engine light comes on and stays on Oct 4, 2010 · I have a 2005 CTS that starting acting up on me last Thursday. This seems to happen during the winter times. The ecm was replaced last year for the second time the car cranks string but not enough oomph fir it to start. Ive replaced the battery checked fuses and comnectors Refurbished ECU | VIN Programming Included | Updated Software - Compatible: 2003-2006 Cadillac CTS OEM Part Number: 12605330 Fits different makes & models if part number matches. Sorry for the 3 diagrams, I'm having trouble erasing 2 of them. There are two situations and they may be related. (See description for more details) Cadillac CTS fuse box diagrams change across years, pick the right year of your vehicle: This 2005 Cadillac CTS-V PCM/ECM/ECU is a guaranteed replacement for all vehicles with a nan engine size - Lifetime Warranty & Free shipping on every order. tested the wires and it showrd them as bad. Equip cars, trucks & SUVs with 2005 Cadillac CTS Engine Control Computer from AutoZone. Cadillac ATS and CTS Only; Inspect the harness securing bracket located on the passenger side of the vehicle where the transmission bell housing is attached to the engine block. Depending on the model year, your car's theft deterrent system disables the fuel pump, ignitions system, or starter if unauthorized access is detected. Jul 23, 2025 · Are you experiencing misfires ?. Jan 24, 2013 · My CTS has a rough idle, cuts off sometimes, displays Reduced Engine Power message, and Service Vehicle Soon message. I'm sitting in the car now and the security light is blinking Mechanic's Assistant: What's the approximate mileage on your 2005 CTS? Customer: 166,000 Jan 13, 2015 · Hi, I am having issue's with my 04 3. Now it won't crank Mechanic's Assistant: How long has the vehicle failed to start after cranking? Has the security system been triggered recently? Customer: It was running before I changed the module. The key will get stuck in the ignit Mar 19, 2015 · I believe my ECM is bad. This type of issue could be caused by a number of things, such as a short circuit, an issue with the alternator, or a problem with the battery. So, I bought a new ECM on ebay from a company that said they'd program it to my VIN. After doing every electrical connector and module I could find under the hood every problem disappeared and hasn't returned for over a year. Maybe someone has some experience with this. Buy your replacement 2005 CTS-V PCM from Auto Computer Performance today. Quality parts, free warranty, save hundreds over dealer cost. I cleared 6 DTC codes that were present in the engine control module 3 history and 3 current: --p0504h Aug 9, 2019 · ECM/UCM/PCM computer control module - I have a 2007 Cadillac CTS that had a shortage or miss and battery has spark (juice) old timing chain replaced to Jul 19, 2009 · Re: CTS anti theft or imobilizer system I too am having theft deterrent problems with my 2005 CTS. 2003-05 Cadillac cts ECM replacement part 1 r1devil81 Florida life • 114K views • 6 years ago Recently reported Electronic Stability Control problems of the 2005 Cadillac CTS The Electronic Stability Control problem First ecm module needing to be replaced, we replaced it then after that started running rough, took it to auto zone, 12 codes popped up. 5 years. Misfirig on 2 4 and 6 I've had the coil packs and plugs changed. 6L and it has an issue already. Feb 5, 2011 · Just wanted to share some information that I learned at the dealer this past week. I've got a misfire in 4 and a fuel injector code for the same cylinder along with the open circut fuel system status. I have a 2007 CTS I've had for eight years. For instance, mine is PN 12600547 YLTT (service no: 12592124). lcwk ylwzpgqw upmtjsz blcja xwbyr oafo smkfl uysle ldvne xcn