Restore Your Vehicle’s Performance and Reliability
Is your GMC Terrain, Equinox, or other GM vehicle running rough, stalling unexpectedly, or showing a persistent check engine light? A faulty Engine Control Module (ECM) is often the culprit behind these frustrating and stressful issues. This genuine, used GM ECM is your direct, reliable solution to restore your vehicle’s peak performance and get you back on the road with confidence. We take the guesswork out of the repair by pre-programming the unit specifically to your vehicle’s VIN, ensuring a seamless, plug-and-play installation.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing ECM could be the cause. This unit is the definitive solution for issues stemming from the engine computer itself, such as:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0606, or other internal processor faults
- Unexplained engine stalling or hesitation
- Poor fuel economy
- Erratic transmission shifting
- Complete no-start condition
By replacing your faulty module with this professionally programmed 2013-2016 GMC Terrain ECM, you are addressing the root cause of these electronic failures and restoring the critical brain of your vehicle’s operations.
Features & Benefits
- โ VIN-Specific Programming: We flash this ECM with the latest GM software updates using your vehicle’s unique VIN. This ensures perfect compatibility and a straightforward installation without needing an expensive trip to the dealership.
- โ Cost-Effective Solution: Get the reliability of an original GM part without the high cost of a new unit. This tested, used module provides exceptional value and performance.
- โ Plug & Play Installation: Because the programming is done for you, this module is ready to install right out of the box. In most cases, no further procedures are required.
- โ Broad GM Compatibility: This unit replaces multiple part numbers, including 12653998, 12633555, 12655007, and 12644446, and fits a wide range of GM cars, trucks, and SUVs.
- โ One-Year Protection: This unit is backed by our one-year replacement warranty.
Expert Technician’s Note: From over 20 years in the shop, I’ve seen countless headaches caused by mismatched control modules. A generic, unprogrammed ECM simply won’t workโit can’t communicate with your vehicle’s other systems. That’s why we take the critical step of programming this ECM specifically to your VIN. This isn’t just a convenience; it’s the essential process that makes this a true plug-and-play solution, saving you from expensive dealership programming fees and diagnostic nightmares.
Don’t let a faulty computer keep your vehicle off the road. This pre-programmed 2013-2016 GMC Terrain ECM is the smart, reliable fix to restore your vehicle’s proper function and your peace of mind.
Frequently Asked Questions
Do I need to do any additional programming?
No. We program the ECM to the VIN you provide before shipping. It will arrive ready to be installed, making it a plug-and-play part. In some rare cases, a security or crank relearn procedure may be necessary, which can be done with a capable scan tool.
How do I provide my vehicle’s VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we receive this information, as it is essential for programming.
Is this a new part?
No, this is a genuine, used OEM part that was carefully removed from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped.
What part numbers does this ECM replace?
This module is a direct replacement for part numbers 12653998, 12633555, 12655007, and 12644446. Please check your original part to confirm compatibility.
Will this fix my vehicle’s problem for sure?
This ECM will correct any issues directly caused by a faulty engine computer. However, it will not fix problems related to other bad sensors, wiring issues, or mechanical failures. Proper vehicle diagnostics are always recommended before ordering.
Where is this part located on my vehicle?
On most compatible vehicles like the GMC Terrain and Chevy Equinox, the ECM is located in the engine compartment on the driver’s side (LH). On models like the Enclave, Acadia, and Traverse, it is located behind the fan shroud.