Is Your Envoy Running Rough? Get Back on the Road with Confidence.
There’s nothing more frustrating than a vehicle you can’t rely on. If your 2004-2005 GMC Envoy XUV is experiencing baffling electrical issues, poor performance, or won’t start reliably, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s a critical component that acts as the brain of your engine. We offer a straightforward, reliable solution: a replacement PCM, professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This eliminates the need for an expensive trip to the dealership for programming, saving you time, money, and stress.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of problems that can be difficult to diagnose. If you’re noticing any of the following, it’s a strong indicator that your engine computer needs attention:
- Unexpected stalling or engine hesitation
- Harsh or erratic automatic transmission shifting
- A persistent Check Engine Light with codes like P0601, P0602, or P0606
- Reduced fuel economy
- Complete no-start condition where the engine cranks but won’t fire
This professionally programmed 2004-2005 Envoy XUV PCM is the definitive solution to restore your vehicle’s original performance and reliability. By matching the unit to your VIN, we ensure it communicates perfectly with your vehicle’s existing systems right out of the box.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Envoy: We flash the module with the latest GM software updates using your vehicle’s VIN. This ensures 100% compatibility and a true plug-and-play installation.
- ✔ No Dealership Required: Skip the expensive programming fees and long wait times at the service center. This unit arrives ready to be installed by you or your trusted mechanic.
- ✔ Restored Engine Performance: A properly functioning PCM corrects issues with fuel mixture, spark timing, and transmission control, bringing back the smooth, efficient operation you expect.
- ✔ Cost-Effective Repair: Get your SUV back in top condition without the high cost of a new module and programming from a dealership. This is a smart, effective repair for a critical component.
- ✔ Broad Compatibility: This module is a direct replacement for multiple part numbers, including 12573576, 12574976, 12577955, 12584593, 16255757, and 19210065, fitting a wide range of GM SUVs from this era.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
As a technician, I’ve seen countless vehicle owners buy a used computer from a salvage yard, hoping for a cheap fix. The problem? That computer is still programmed for the donor vehicle. It won’t recognize your Envoy’s keys, security system, or specific options. This leads to a no-start condition and a new, more complicated problem. Our process of programming the module to your VIN before shipping is what makes this a real solution. It bypasses all those compatibility headaches, making the repair as simple as swapping the part.
Frequently Asked Questions
Do I need to do any additional programming after installation?
No. This programmed 2004-2005 Envoy XUV PCM arrives ready for installation. In most cases, you will not need to perform any additional programming. However, some vehicles may require a simple security relearn procedure, which can typically be done without special tools and instructions can be easily found online.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically find this on your vehicle’s registration, insurance card, or on a plate on the driver’s side of the dashboard visible through the windshield.
Where is the PCM located on my Envoy XUV?
On the GMC Envoy, Trailblazer, and related platforms, the PCM is typically located in the engine bay on the driver’s side, near the fuse box and firewall. It’s a silver metal box with several large electrical connectors.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls the transmission’s shift points and line pressure. If the computer is failing, it can cause erratic and harsh shifting. Replacing a faulty PCM often resolves these types of transmission issues.
My original part number isn’t 12574976, but it’s on your list. Will this work?
Absolutely. The part numbers listed (like 12573576, 12577955, etc.) are all interchangeable for this application. As long as your vehicle is listed in the compatibility chart and we program the module to your VIN, it will function correctly.