Restore Peak Performance to Your GM Vehicle
Is your 2017 Chevrolet Traverse or other compatible GM vehicle suddenly stalling, running rough, or refusing to start? Are you battling a persistent Check Engine Light with codes that just won’t clear? A failing Engine Control Module (ECM) is often the culprit, acting as the brain of your vehicle’s engine. This replacement ECM, part number 12667002, is the definitive solution to restore your vehicle’s reliability and drivability. We take the guesswork and high costs out of the equation by professionally flashing the module with the very latest GM-certified software, specifically matched to your vehicle’s VIN. This ensures optimal performance, fuel efficiency, and seamless communication with all other onboard systems—no expensive dealership visit required.
A Technician’s Notebook: The Misleading Fault
I once had a 2017 Acadia in the bay with what the owner described as a transmission problem. It was shifting erratically and sometimes felt like it was getting stuck in gear. The transmission codes were all over the place, pointing towards a faulty TCM or solenoid pack. After hours of diagnostics, we found no issues with the transmission itself. On a hunch, I scanned the ECM and found intermittent communication loss codes (U-codes) that weren’t triggering the CEL. The ECM was failing internally, sending corrupt data to the transmission controller and causing all the symptoms. We installed a VIN-programmed ECM just like this one, and the ‘transmission problem’ vanished instantly. It’s a classic example of how a faulty 2017 Traverse Engine Control Module can disguise itself as another issue, costing you time and money on incorrect repairs.
Is Your Vehicle Showing These Signs of ECM Failure?
A failing engine computer can cause a wide range of frustrating symptoms. If you’re experiencing any of the following, a new ECM is the most likely solution:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling, stuttering, or misfiring
- ✔ No-start or hard-start conditions
- ✔ Noticeable decrease in fuel economy
- ✔ Failure to pass an emissions inspection
- ✔ Communication error codes, such as U0100
- ✔ Internal module fault codes, like P0601, P0603, or P0606
- ✔ Erratic automatic transmission shifting
A Straightforward Guide to Installation
For the confident DIYer, installing this pre-programmed ECM is a manageable job. The specific location for the 2017 Traverse is behind the fan shroud, which may require removing the shroud for access. Always consult a repair manual for your specific vehicle’s procedure.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all systems to discharge.
- Locate the ECM: On the Traverse, Acadia, and Enclave, it’s typically mounted behind the cooling fan shroud. On other models like the Equinox or Regal, it’s in the LH (driver’s side) engine compartment.
- Disconnect Connectors: Carefully release the locking tabs and unplug all electrical harness connectors from the old ECM. Avoid forcing them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will need it for the new module.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Steps: Some vehicles may require a security relearn or crank position sensor relearn procedure, which can often be done without special tools. Turn the key to the ‘ON’ position for 10-15 minutes before starting the engine to allow the systems to initialize.
Why Our Programmed 2017 Traverse Engine Control Module is the Smart Choice
This isn’t just a replacement part; it’s a complete, ready-to-install solution. By providing us with your VIN, you receive a module that is not only a direct-fit replacement but is also loaded with the most current software from General Motors. This process corrects factory bugs and optimizes engine parameters for fuel economy and performance. This module is a reliable, cost-effective alternative to a dealership repair, putting you back in control of your vehicle and your wallet.
Verified Vehicle Compatibility
This ECM is a direct fit for the following vehicles and part numbers. It is a compatible replacement for part numbers 12666070 and 12667189.
- 2017 Chevrolet Caprice: 3.6L
- 2017 Chevrolet Traverse: (Located behind fan shroud)
- 2017-2019 Cadillac XTS: 3.6L, VIN 3 (8th digit, opt LFX)
- 2017 GMC Acadia: Limited models, VIN J (11th digit), (Located behind fan shroud)
- 2017 Buick Enclave: (Located behind fan shroud)
- 2017 Buick Regal: (Located in LH engine compartment)
- 2017 Buick Verano
- 2017-2019 Chevrolet Impala
- 2017 Chevrolet Equinox: (Located in LH engine compartment)
- 2017 GMC Terrain: (Located in LH engine compartment)
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to load the exact, correct GM software for your vehicle’s specific options and configuration. This ensures the module works perfectly right out of the box.
Is this part difficult to install?
For someone with moderate mechanical skill, the installation is straightforward. The main challenge is accessing the module’s location. However, since it arrives pre-programmed, no special computer equipment is needed for the installation itself.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original ECM (e.g., codes P0601-P0606), then this part is the correct fix. It’s crucial to ensure your vehicle’s issue has been properly diagnosed before ordering.
What if I have a different part number on my old ECM?
This ECM, part number 12667002, is also a direct replacement for part numbers 12666070 and 12667189. As long as your vehicle is on the compatibility list, this module will work.
Do I need to send my old part back?
No core charge or return is required for this module. You can keep or recycle your old part at your convenience.