Restore Your Envoy’s Heartbeat and Drive with Confidence Again
Is your 2006 GMC Envoy XL feeling sluggish, shifting erratically, or lighting up the dashboard like a holiday tree? The frustration of an unreliable vehicle is more than just an inconvenience—it’s a constant source of worry. The Powertrain Control Module (PCM) is the brain of your vehicle, orchestrating everything from fuel mixture and spark timing to transmission shifts. When it falters, the entire system suffers. This isn’t just a replacement part; it’s the key to regaining that smooth, predictable, and worry-free driving experience you depend on.
We take the guesswork and complexity out of the repair. Each module is meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN), ensuring it communicates flawlessly with all of your Envoy’s systems right out of the box. This critical step means you can bypass expensive dealership programming and get back on the road faster, with the satisfaction of a job well done.
Is Your Envoy XL Showing These Signs?
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the definitive solution:
- ✔ Persistent Check Engine Light (CEL) with diagnostic trouble codes (DTCs) like P0601, P0602, P0606, or other communication errors.
- ✔ Unpredictable or harsh transmission shifting.
- ✔ A sudden, unexplained drop in fuel economy.
- ✔ The engine cranks but refuses to start.
- ✔ Stalling, stumbling, or rough idling, especially when warm.
- ✔ No communication with your OBD-II scan tool.
Guided Installation to Restore Peace of Mind
Replacing your 2006 Envoy XL PCM is a straightforward process you can tackle with basic hand tools. Follow these steps for a confident fix:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On your Envoy XL, the PCM is typically found on the driver’s side of the engine compartment, mounted to the inner fender or firewall.
- Disconnect the Old Unit: Carefully unplug the electrical connectors. Most have a locking tab or lever that needs to be released first. Avoid pulling on the wires themselves.
- Swap the Modules: Unbolt the old PCM from its bracket and set it aside. Mount your new, pre-programmed module in its place.
- Reconnect and Power Up: Firmly seat the electrical connectors onto the new PCM until they click into place. Reconnect your battery terminal.
- Final Step: While the module is programmed to your VIN, your vehicle’s anti-theft system may require a simple “relearn” procedure. This can usually be done by turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine.
Tailored Fit for Your Ride: The 2006 Envoy XL PCM and More
This module is a direct-fit, programmed solution for a wide range of GM vehicles. Please verify your make, model, and engine to ensure perfect compatibility.
- 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 & i-350: 2006
- Saab 9-7x: 2006 (6-cylinder)
This unit directly replaces part numbers: 12569773, 12588650, 12589311, 12589585, 12591647, 12591648, 12593531, 12593532, 12594430, 12594431, 12596783, 12596784, 12597521, 12597776, 12597777, 12600818, 12604438, 12604439, 12606369, 12606373, 12606374, 12606398, 12606399, 19209820, 19209821.
Frequently Asked Questions
What exactly does a PCM do?
The Powertrain Control Module (PCM) is your vehicle’s central computer. It controls the engine’s fuel injection, ignition timing, and emissions systems, as well as the transmission’s shifting patterns, to ensure optimal performance, fuel economy, and reliability.
Is this module truly ‘plug and play’?
Because we program it to your specific VIN, it is as close to ‘plug and play’ as possible. In most cases, the only additional step is a simple security relearn procedure that you can do yourself in about 30 minutes with just your ignition key. No special tools are required.
How do I provide you with my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive this information, as it is essential for the programming process.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the old PCM (common codes are P0601-P0606), then yes, this will resolve the issue. However, if the light is on due to a faulty sensor or other component, that separate issue will still need to be addressed.
What if I have aftermarket modifications on my vehicle?
Our modules are programmed with the latest factory GM software for a stock vehicle configuration. This ensures maximum reliability and compatibility. We do not provide programming for significant aftermarket modifications like turbochargers or non-stock engine components.