Restore Your Envoy’s Peak Performance and Reliability
Is your GMC Envoy XL suffering from frustrating issues like a persistent check engine light, rough idling, hesitation during acceleration, or poor fuel economy? These are common signs that the heart of your vehicle’s engine management system—the Powertrain Control Module (PCM)—is failing. Don’t let a faulty computer keep you off the road. This professionally programmed PCM is the definitive, hassle-free solution to bring your vehicle back to its smooth, efficient, and reliable self.
We take all the guesswork out of the repair. Simply provide your vehicle’s VIN during checkout, and our experts will flash this module with the latest, most stable GM-certified software specifically for your 2006 Envoy XL. It arrives at your door ready for a straightforward installation, saving you a costly trip to the dealership and the complexities of programming it yourself. Regain the confidence of a vehicle that starts, runs, and shifts exactly as it should.
Warning Signs and How to Overcome Them
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your solution:
- ✔ Persistent Check Engine Light (CEL) that won’t go away.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0606, or other communication errors.
- ✔ Unexplained drop in fuel mileage.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, sputtering, or refusing to start.
- ✔ Noticeable loss of engine power and poor acceleration.
- ✔ Failure to pass state emissions testing.
Effortless Steps for a Confident Fix
Installing your new 2006 Envoy XL PCM is a manageable job for a DIY enthusiast. Follow these guided steps for a successful replacement.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent any accidental reconnection.
- Locate the Old Module: On your Envoy XL, the PCM is typically found in the engine bay, on the driver’s side, mounted near the firewall or inner fender.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that may need to be gently pried or squeezed. Once disconnected, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely tighten the bolts. Reconnect the electrical harnesses, ensuring they click firmly into place.
- Power Up: Reconnect the negative battery terminal and tighten it.
- Final Sync: In many cases, you will need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times. This allows the new PCM to synchronize with your vehicle’s anti-theft system. Consult your owner’s manual for the specific procedure for your vehicle.
Tailored Fit for Your Ride
This module is a direct-fit replacement for a wide range of GM vehicles. While this listing is focused on the 2006 Envoy XL PCM, it is also confirmed to fit the following makes and models equipped with the corresponding engine options. Please verify your part number to ensure a perfect match.
- Buick Rainier: 2006 (4.2L)
- Chevrolet Colorado: 2004-2006
- Chevrolet Trailblazer & Trailblazer EXT: 2006 (4.2L)
- GMC Canyon: 2004-2006
- GMC Envoy & Envoy XL: 2006 (4.2L)
- Hummer H3: 2006
- Isuzu Ascender: 2006 (4.2L)
- Isuzu i-280: 2006
- Isuzu i-350: 2006
- Saab 9-7x: 2006 (6 cylinder)
This computer replaces part numbers: 12569773, 12588650, 12589311, 12589585, 12591647, 12591648, 12593531, 12593532, 12594430, 12594431, and more.
Is this computer truly plug-and-play?
Yes, for the most part. We program it to your vehicle’s specific VIN, which handles all the engine and transmission software. After installation, you may need to perform a simple security relearn procedure, which takes about 30 minutes and doesn’t require any special tools.
What information do you need from me?
After you place your order, we will need your 17-digit Vehicle Identification Number (VIN). You can typically find this on your driver’s side dashboard (visible through the windshield), on your vehicle’s registration, or on the driver’s side door jamb sticker.
Will this fix my transmission shifting problems?
The PCM controls both the engine and the transmission. If your shifting issues are caused by faulty electronic signals or software glitches within the module, then this replacement will solve the problem. However, it will not fix internal mechanical failures within the transmission itself.
Do I need to send my old module back?
No core charge or return is required for this part. You can keep your old module or dispose of it responsibly.
How long does the programming process take before shipping?
Once we receive your VIN, programming is typically completed within 1-2 business days, after which your order will be shipped out promptly.