Is your 2010-2011 Chevrolet Traverse, or another compatible GM vehicle, suffering from perplexing engine issues? A faulty Engine Control Module (ECM) is often the culprit behind problems like stalling, poor fuel economy, and a persistent check engine light. This replacement ECM, part number 12635019, is the definitive solution to restore your vehicle’s performance, reliability, and drivability. We take the guesswork out of the repair by pre-programming the module specifically for your vehicle using your VIN. This ensures it arrives ready for installation with the latest factory software updates from GM, making the process as straightforward as possible.
Symptoms of a Failing 2010-2011 Traverse ECM
The ECM is the brain of your vehicle’s engine, controlling everything from fuel injection and ignition timing to emissions systems and transmission communication. When it begins to fail, the symptoms can be widespread and confusing. If you’re experiencing any of the issues below, a failing engine computer is a likely cause.
From the Diagnostic Bay
We had a 2011 GMC Acadia (which uses the same platform and ECM as the Traverse) come into the shop with a complaint of intermittent stalling at stoplights and a general lack of power. The check engine light was on, but the codes were all over the place—random misfires, a throttle body code, and a communication error with the transmission module. The owner had already replaced the spark plugs and a coil pack with no improvement. We checked the main power and ground connections to the ECM, which were solid. Suspecting an internal ECM fault, we ordered a VIN-programmed unit just like this one. After a ten-minute installation, we performed the security relearn procedure. The engine fired up perfectly, all the codes were gone, and the vehicle drove like it just rolled off the assembly line. The pre-programmed module saved hours of complex diagnostics and prevented the customer from replacing more unnecessary parts.
Common Failure Symptoms
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Complete no-start condition where the engine cranks but will not fire up.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication error codes (U-codes) when scanned with a diagnostic tool.
- ✔ Failure to pass state emissions testing.
Plug-and-Play Solution for Your GM Vehicle
Replacing an ECM used to require expensive trips to the dealership for programming. Our service eliminates that step. By providing us with your vehicle’s VIN (Vehicle Identification Number) during checkout, you receive a module that is loaded with the correct software for your specific make, model, and options. For most compatible vehicles, this makes the installation a direct replacement. Simply disconnect the battery, swap the modules, reconnect the battery, and perform a simple security relearn procedure (instructions can be easily found online or in a service manual). This process is designed to get you back on the road quickly and affordably.
Important Note for Camaro & LaCrosse Owners: Due to the specific anti-theft systems in the 2010-2011 Camaro and LaCrosse, we require your original ECM to be sent to us. This allows us to extract the unique immobilizer data and transfer it to the new module, ensuring a true plug-and-play experience without any additional security programming needed on your end. We will contact you with shipping instructions after your purchase.
Guaranteed Fitment
This module is a direct replacement for part number 12635019 and is also compatible with part numbers 19300015, 19300014, 12617230, and 12636355. It is confirmed to fit the following vehicles equipped with the 3.6L engine:
- 2010-2011 Buick Allure
- 2010-2011 Buick LaCrosse
- 2010-2011 Buick Enclave
- 2010-2011 Cadillac CTS
- 2010-2011 Cadillac STS
- 2010-2011 Chevrolet Camaro
- 2010-2011 Chevrolet Traverse
- 2010-2011 GMC Acadia
- 2010 Saturn Outlook
Frequently Asked Questions
Why do I need to provide my VIN?
Your VIN allows us to load the exact GM-specified software for your vehicle’s engine, transmission, and options. This ensures perfect compatibility and function, and it’s a critical step for a successful repair.
Is any additional programming required after installation?
For most vehicles listed, you will only need to perform a standard security relearn procedure, which typically involves turning the key on for 10-15 minutes. For Camaro and LaCrosse models, if you send us your original module, no further programming will be needed.
Where is the ECM located on my 2010-2011 Traverse?
On the Traverse, Acadia, Enclave, and Outlook, the ECM is typically located behind the engine’s cooling fan shroud, making it accessible from the top of the engine bay.
What happens if I don’t send my old ECM for my Camaro/LaCrosse?
If you do not send in your original module for a Camaro or LaCrosse, the replacement ECM will not have the correct immobilizer data. The vehicle will not start, and you will need to have a professional with advanced tools perform a security system setup.
Will this part fix my check engine light?
If the check engine light is caused by a faulty ECM or an internal processor error, this replacement module will solve the issue. However, if the light is on due to a separate failed sensor or component, that part will still need to be addressed.