Is Your Envoy XUV Acting Up? Get Back on the Road with Confidence.
If you’re dealing with frustrating and unpredictable issues like stalling at stoplights, a rough idle, poor fuel economy, or a check engine light that just won’t go away, a failing Powertrain Control Module (PCM) is the most likely culprit. In your 2004-2005 Envoy XUV, the PCM is the brain of the engine, and when it starts to fail, it can cause a wide range of problems that are often misdiagnosed. This replacement module is the definitive solution to restore your SUV’s performance and reliability.
Common Failure Symptoms & Your Direct-Fit Solution
A faulty engine computer can make your vehicle unreliable and unsafe. Don’t keep guessing or replacing unnecessary parts. If you’re experiencing any of the following, this module is the fix you need:
- Engine stalling or cutting out unexpectedly
- No-start or hard-start conditions
- Noticeable drop in fuel mileage (MPG)
- Check Engine Light with codes like P0601, P0602, P0606
- Transmission shifting harshly or at the wrong times
- Communication errors with diagnostic scan tools
This is not just a replacement part; it’s a complete, ready-to-install solution. We handle the programming for you, using your vehicle’s VIN to load the latest, most stable software from GM. This ensures your 2004-2005 Envoy XUV PCM performs exactly as the factory intended.
Features & Benefits
- âś” VIN-Programmed for Your SUV: We flash the module with your vehicle’s specific VIN and the latest GM software updates, ensuring perfect compatibility and performance right out of the box.
- âś” Plug & Play Installation: No need for an expensive trip to the dealership. This unit arrives ready to install, saving you significant time and money. A simple security relearn procedure may be required, which you can do yourself in 15 minutes.
- âś” Restores Original Performance: Eliminates frustrating issues like rough idling, poor acceleration, and bad fuel mileage, making your Envoy drive like new again.
- âś” Solves the Root Problem: A faulty PCM can trigger misleading codes for other sensors. This module resolves the core issue, clearing up confusing diagnostic headaches for good.
- âś” Backed by a Lifetime Warranty: Drive with complete peace of mind knowing your investment is protected for as long as you own your vehicle.
Expert Insight from Our Senior Technician
“We see these GM SUVs in the shop all the time. A classic sign of a failing computer in the 4.2L engine is erratic behavior that seems to have no pattern—stalling one day, running fine the next. Technicians often waste hundreds of dollars chasing ghosts, replacing perfectly good MAF sensors, throttle bodies, or ignition coils. The real issue is almost always internal board failure in the original PCM. Installing a properly programmed 2004-2005 Envoy XUV PCM like this one is the only way to fix it right the first time.”
Frequently Asked Questions
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will receive an email with instructions on where to send your VIN. You can also add it to the ‘notes’ section during checkout. We cannot program and ship your module without your vehicle’s 17-digit VIN.
Is this part difficult to install?
No, installation is straightforward for a DIYer with basic tools. The PCM is typically located in the engine bay. You’ll need to disconnect the negative battery terminal, unplug the electrical connectors from the old module, unbolt it, and then install the new one in reverse order. The entire process usually takes less than 30 minutes.
Will I need to do anything after installation?
In most cases, you will need to perform a simple security relearn procedure so the vehicle recognizes the new PCM. This procedure, also known as a ‘CASE relearn,’ does not require any special tools. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times. We include clear, easy-to-follow instructions with your order.
Is this a used part?
This is a professionally prepared and tested OEM component. Each unit undergoes a rigorous inspection and validation process to ensure it meets or exceeds original factory specifications. All internal components are verified, and the module is programmed with the latest software for your vehicle.
Will this fix my specific error codes?
This module is a guaranteed fix for internal processor fault codes (like P0601, P0606) and other common PCM-related issues. If your vehicle has been properly diagnosed with a faulty PCM, this part will resolve the problem. We recommend ensuring other components like wiring and sensors have been checked first.
What if my original part number is not 16255757?
No problem. This module is compatible with a range of part numbers, including 12573576, 12574976, 12577955, 12584593, and 19210065. As long as your vehicle is listed in the compatibility chart, we will program the correct software for a perfect match using your VIN.