Restore Peak Performance to Your GMC Envoy XL
Is your 2006 GMC Envoy XL running rough, shifting erratically, or showing a persistent check engine light? A failing Powertrain Control Module (PCM) is often the culprit behind these frustrating and concerning issues. This isn’t just an inconvenience; it affects your vehicle’s reliability, fuel economy, and overall drivability. We offer the definitive solution: a professionally programmed engine computer that restores your truck’s factory performance and gets you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, it’s a strong indicator that your engine computer needs replacement. Common Diagnostic Trouble Codes (DTCs) like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (PCM Processor Fault) point directly to a failing module. Don’t let these issues sideline your vehicle. Our pre-programmed 2006 GMC Envoy XL PCM 12597777 is the reliable, cost-effective fix for:
- Persistent Check Engine Light
- Engine stalling or misfiring
- Harsh or unpredictable transmission shifting
- Poor fuel economy
- No-start conditions or communication errors with scan tools
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Truck: We flash this module with the latest GM-certified software using your vehicle’s specific VIN. This eliminates compatibility guesswork and ensures a true plug-and-play installation.
- ✔ Restored Factory Performance: By using the newest calibrations, this PCM restores the precise fuel delivery, ignition timing, and transmission shift points your Envoy was designed for.
- ✔ Cost-Effective Dealership Alternative: Skip the expensive programming fees and long wait times at the dealership. This unit arrives ready to install, saving you time and hundreds of dollars.
- ✔ Direct-Fit Replacement: This module is a direct replacement for a wide range of original part numbers, including 12597776, 12606373, 12591647, and more, guaranteeing a perfect fit.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
An Expert’s Note on GM Security Systems
Many owners don’t realize that you can’t simply swap a used computer into a mid-2000s GM vehicle like the Envoy. The factory anti-theft system (PassLock/PassKey II) is tied directly to the original PCM. Our service is essential because by programming the unit to your VIN before shipping, we ensure it communicates correctly with your truck’s existing security components. After installation, a simple “security relearn” procedure (which takes about 30 minutes and requires only your key) is all that’s needed to fully sync the module to your vehicle. This is the secret to a successful, hassle-free repair.
Ordering is simple. After your purchase, just provide us with your vehicle’s VIN. Our technicians will handle the programming, and we’ll ship the ready-to-install 2006 GMC Envoy XL PCM 12597777 directly to your door. Get your reliable truck back to running the way it should.
Frequently Asked Questions
Do I need to have this computer programmed again?
No. This PCM arrives fully programmed to your vehicle’s VIN with the latest GM updates. It is ready for installation right out of the box. You will not need to take it to a dealership or mechanic for additional programming.
What is the security relearn procedure?
After installing the new PCM, you may need to perform a simple security relearn. This process involves turning the key to the ‘ON’ position for 10-12 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. This allows the new PCM to sync with your vehicle’s anti-theft system. Instructions are readily available online and are easy to follow.
How do I send you my VIN?
After you complete your purchase, you can send us your 17-digit Vehicle Identification Number (VIN) through the platform’s messaging system or in the notes section of your order. We cannot ship your part until we receive this information.
Will this fix my specific problem?
This 2006 GMC Envoy XL PCM 12597777 will correct any issues directly caused by a faulty engine computer. While it solves the vast majority of electronic engine and transmission problems, we always recommend a proper diagnosis by a qualified mechanic to ensure the PCM is the root cause of your issue.
Is this a difficult part to install?
The physical installation is straightforward for someone with basic mechanical skills. It typically involves disconnecting the vehicle’s battery, unplugging the electrical connectors from the old PCM, unbolting it, and then reversing the process. It’s located on the driver’s side of the engine compartment on the 4.2L Envoy.