Is Your 2006 Envoy XL Running Rough? The PCM Might Be the Culprit.
If your 2006 GMC Envoy XL is experiencing frustrating issues like a persistent Check Engine Light, erratic shifting, poor fuel economy, or even a no-start condition, the problem may lie with a failing Powertrain Control Module (PCM). As the central computer for your vehicle’s engine and transmission, the PCM is responsible for managing everything from fuel injection and spark timing to transmission shift points. When it begins to fail, it can cause a wide range of symptoms that can be difficult to diagnose.
This replacement Powertrain Control Module is the definitive solution to restore your vehicle’s performance and reliability. It is a direct-fit component for your Envoy XL, professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical programming step ensures that the module communicates flawlessly with all other systems in your truck, just as the original did. We flash the unit with the latest, most stable software updates from GM, which can resolve underlying drivability issues you may not have even known were software-related.
Expert Pro Tip
Expert Pro Tip
Before replacing your PCM, always perform a thorough check of your vehicle’s battery, terminals, and primary ground wires. A weak battery, loose connections, or a corroded ground strap can cause voltage drops and erratic signals that often mimic the symptoms of a failed PCM. Cleaning terminals and verifying a solid ground connection is a simple, inexpensive step that can save you from a misdiagnosis.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) illumination.
- ✔ Engine stalling, stumbling, or misfiring.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ The engine cranks but refuses to start.
- ✔ Communication error codes when scanned with a diagnostic tool.
- ✔ Failure to pass an emissions test.
Why Choose Our Programmed 2006 Envoy XL PCM?
Getting your vehicle back on the road shouldn’t be a complicated process. Our service is designed to be simple and effective. When you order, you provide us with your VIN. Our technicians then use that number to access the correct GM calibration files and program the module specifically for your 2006 Envoy XL’s configuration. This means no trips to the dealership for expensive programming. The module arrives at your door ready for installation. In most cases, after installation, you will only need to perform a simple security relearn procedure, which can often be done without special tools.
Broad Compatibility and Part Number Replacement
This module, identified by part number 12569773, is a versatile solution for a range of GM vehicles from this era. It directly replaces numerous other part numbers, ensuring wide compatibility. If your old module has any of the following numbers, this unit is the correct replacement for you: 12588650, 12589311, 12589585, 12591647, 12591648, 12593531, 12593532, 12594430, 12594431, 12596783, 12596784, 12597521, 12597776, 12597777, 12600818, 12604438, 12604439, 12606369, 12606373, 12606374, 12606398, 12606399, 19209820, 19209821.
This unit is also the correct electronic control module for models such as the 2004-2006 Chevrolet Colorado & GMC Canyon, 2006 Buick Rainier, 2006 Hummer H3, 2006 Isuzu Ascender, 2006 Chevrolet Trailblazer, and 2006 Saab 9-7X, among others. Please verify your specific application in the fitment guide.
Frequently Asked Questions
Expert Pro Tip
Before replacing your PCM, always perform a thorough check of your vehicle’s battery, terminals, and primary ground wires. A weak battery, loose connections, or a corroded ground strap can cause voltage drops and erratic signals that often mimic the symptoms of a failed PCM. Cleaning terminals and verifying a solid ground connection is a simple, inexpensive step that can save you from a misdiagnosis.