Is Your Envoy XUV Running Rough or Not Starting?
There’s nothing more frustrating than a vehicle you can’t rely on. If your 2004-2005 GMC Envoy XUV is suffering from baffling electrical issues, a persistent check engine light, or poor performance, a failing Powertrain Control Module (PCM) is often the culprit. Instead of facing a costly trip to the dealership and waiting days for programming, get the definitive, ready-to-install solution. This module is the brain of your truck, and we deliver a fresh one, professionally programmed to your specific Vehicle Identification Number (VIN), ensuring you get back on the road quickly and confidently.
Common Symptoms & Your Solution
A failing engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, this pre-programmed 2004-2005 Envoy XUV PCM is the answer:
- Erratic engine performance (stalling, rough idle, hesitation)
- Complete no-start condition where the engine cranks but won’t fire
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) like U0100, P0601, or P0606
- Poor fuel economy and shifting problems
- Seemingly random warning lights on the instrument cluster
This isn’t just a part; it’s a complete, plug-and-play fix. We take your vehicle’s VIN, load the latest GM-authorized software and calibrations, and ship a module that is ready to be installed right out of the box.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: We flash the unit with your Envoy’s specific VIN, ensuring it communicates perfectly with your vehicle’s other modules. No extra programming needed.
- ✔ Plug & Play Installation: Simply disconnect the battery, swap the old module with this one, and reconnect the battery. A straightforward job for any DIY mechanic.
- ✔ Updated GM Software: Your module arrives with the newest factory software updates from General Motors, which can resolve underlying drivability issues and improve efficiency.
- ✔ Cost-Effective Solution: Avoid the high costs and scheduling hassles of a dealership service department. This is a direct, affordable path to getting your vehicle fixed right.
- ✔ 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 2003-2006.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The P59 Controller Explained
The computer in your Envoy is known as the P59 controller. It was a workhorse for GM, but after nearly two decades of heat cycles and vibrations, internal circuit board failures are common. Often, the processor or memory chips can fail, leading to a complete loss of communication. When this happens, a scan tool can’t even talk to the computer. By installing our professionally programmed 2004-2005 Envoy XUV PCM, you’re not just replacing a faulty part—you’re restoring the central nervous system of your truck with a reliable unit loaded with the best possible software for its operation.
Frequently Asked Questions
Do I need to do anything after installation?
In most cases, no. Because the unit is pre-programmed, it is ready to go. However, some vehicles may require a security relearn procedure (often called CASE relearn or Passlock relearn), which can typically be done without special tools. Instructions are widely available online for your specific model.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email. We cannot program or ship the part without it.
What if my original part number isn’t on your list?
Please contact us with your VIN and original part number. The list provided covers the most common compatible numbers, but there may be others. We can verify compatibility for you to ensure you get the correct part.
What symptoms does a bad PCM cause?
A bad PCM can cause a wide range of issues, from a simple check engine light to a no-start condition, poor fuel mileage, erratic shifting, and stalling. Because it controls the engine and transmission, any problem with it can significantly affect your vehicle’s drivability.
Is this a used part?
This is a quality, inspected, and tested module that has been professionally programmed to function correctly in your vehicle. We ensure every unit meets strict functional standards before it is programmed and shipped.
Don’t let a faulty computer keep your reliable GM truck off the road. Order your programmed 2004-2005 Envoy XUV PCM today and restore the performance and dependability you count on.