End the Guesswork and Get Back on the Road with Confidence
Is your 2006 GMC Envoy XL acting erratically? Stalling, shifting hard, or showing a persistent check engine light? These frustrating issues often point to a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer keep you sidelined. This replacement PCM, part number 12600818, is the definitive solution to restore your truck’s performance and your peace of mind. We take the complexity out of the repair by programming the module specifically to your vehicle’s VIN before it ever leaves our facility. This means a smoother installation and a reliable fix that gets you back to driving a vehicle you can trust.
Warning Signs Your PCM is Failing & The Benefits of This Solution
- ✔ Check Engine Light On: Specifically for communication-related codes like P0601, P0605, or P0606.
- ✔ Erratic Engine Performance: Solves issues like random stalling, rough idling, poor acceleration, and decreased fuel economy.
- ✔ Transmission Problems: Corrects harsh or delayed shifting that originates from faulty computer signals.
- ✔ No-Start Condition: Restores communication between the ignition, fuel, and engine systems to get your vehicle starting reliably every time.
- ✔ VIN-Specific Programming: Arrives flashed with the latest GM software updates for your exact vehicle, ensuring optimal performance and compatibility.
- ✔ Plug-and-Play Design: Simplifies the installation process, minimizing vehicle downtime and getting you back on the road faster.
Guided Installation for Your 2006 Envoy XL PCM
Replacing your PCM is a straightforward process that you can tackle with basic tools. Follow these steps for a successful installation and feel the satisfaction of a job well done.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Old PCM: On your Envoy, the PCM is typically found in the engine bay, on the driver’s side, attached to the inner fender or firewall.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and gently pull them straight out from the module. Avoid wiggling them side-to-side.
- Remove the Module: Unbolt the old PCM from its mounting bracket. It’s usually held in by a few 10mm bolts.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely tighten the bolts.
- Reconnect Everything: Plug the electrical harnesses back into the new module until they click firmly into place. Reconnect the negative battery terminal.
- Perform Security Relearn: Your vehicle may require a simple security relearn procedure to recognize the new PCM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual for the exact steps for your vehicle.
Tailored Fit for Your Ride
This module is a direct replacement for part number 12600818 and is guaranteed to be compatible with the following vehicles and options. Please verify your part number or contact us with your VIN if you have any questions.
- COLORADO 04-06 Electronic Control Module; (RH firewall)
- RAINIER 06 Electronic Control Module; (LH engine), 4.2L
- HUMMER H3 06 Electronic Control Module; (RH firewall)
- ISUZU ASCENDER 06 Electronic Control Module; 4.2L (LH engine)
- ISUZU I-350 06 Electronic Control Module; (RH firewall)
- TRAILBLAZER 06 Electronic Control Module; (LH engine), 4.2L
- TRAILBLAZER EXT 06 Electronic Control Module; (LH engine), 4.2L
- ENVOY XL 06 Electronic Control Module; (LH engine), 4.2L
- ISUZU I-280 06 Electronic Control Module; (RH firewall)
- SAAB 9-7X 06 Electronic Control Module; (LH engine), 6 cylinder, ID 12569773 or 12597521
- CANYON 04-06 Electronic Control Module; (RH firewall)
- ENVOY 06 Electronic Control Module; 4.2L (LH engine)
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before we ship the part. Simply provide us with your vehicle’s VIN during checkout, and we will flash the module with the latest GM software specific to your vehicle, making it ready for installation.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact factory calibration file for your truck’s specific options, like engine size, transmission type, and emissions equipment. This ensures perfect compatibility and performance.
Is this a simple plug-and-play installation?
Yes, for the most part. The module is programmed to be a direct replacement. However, most GM vehicles of this era require a security relearn procedure after installation for the vehicle to start. This is a simple process you can do yourself with just the ignition key.
Will this fix my specific check engine light codes?
This PCM is the definitive solution for internal module failure codes, such as P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault). If you have other codes, ensure you have diagnosed the root cause, as the PCM is often the last piece of the puzzle.
What if I have another part number?
This module replaces a wide range of original part numbers, including 12597776, 12606373, 12593531, and many others listed in the description. As long as your vehicle is on the compatibility list, this module will work for you.