Get Your GM SUV Back on the Road, Fast.
Is your Trailblazer, Envoy, or Rainier suffering from baffling electrical issues, poor engine performance, or a dreaded no-start condition? A failing Powertrain Control Module (PCM) is often the culprit, and this programmed 2004-2005 Envoy XUV PCM is the definitive solution for your vehicle. Stop chasing phantom sensor codes and solve the root problem with a reliable, VIN-matched engine computer that restores your vehicle’s performance and dependability.
Common Symptoms & Your Direct-Fit Solution
A faulty PCM can cause a wide range of frustrating issues that can make your vehicle unreliable or even undrivable. If you’re experiencing any of the following, a replacement module is your most likely fix:
- Check Engine Light with communication error codes (e.g., P0601, P0606)
- Engine stalling or shutting off while driving
- Harsh or erratic transmission shifting
- Complete no-start condition where the engine cranks but won’t fire
- Noticeable decrease in fuel economy
- Failure to pass emissions testing
This unit is the direct solution, arriving at your door pre-programmed with the latest GM software updates specifically for your vehicle. This eliminates the need for an expensive trip to the dealership for programming.
Features & Tangible Benefits
- ✔ Plug & Play Installation: This module is fully programmed to your vehicle’s specific VIN before shipping. Simply install it, perform the security relearn procedure, and you’re ready to go.
- ✔ Peak Performance & Efficiency: We flash the unit with the newest official GM calibrations, ensuring your engine and transmission operate exactly as the manufacturer intended for optimal power and fuel economy.
- ✔ Guaranteed Fitment: As a direct replacement for multiple part numbers, this 2004-2005 Envoy XUV PCM ensures a perfect, hassle-free installation in your Trailblazer, Rainier, or other compatible GM SUV.
- ✔ Solve Frustrating Issues: Put an end to confusing diagnostic codes and inconsistent performance by replacing the core component responsible for managing your vehicle’s powertrain.
- ✔ This unit is backed by our one-year replacement warranty.
A Technician’s Note on Programming
From over 20 years in the shop, I’ve seen countless vehicles towed in after a DIY computer swap failed. The critical step that’s often missed is programming. A PCM isn’t just hardware; it’s the brain, and it needs to be specifically coded to your vehicle’s VIN to communicate with the security system, transmission, and other modules. Our process handles this complex step for you, turning what was once a dealership-level job into a straightforward installation you can perform with confidence.
Frequently Asked Questions
Do I need to get this PCM programmed by a dealer?
No. This is the primary benefit of our service. The module you receive will be pre-programmed using the VIN you provide, saving you time and the high cost of dealership programming.
What is a CASE Relearn and will I need one?
A Crankshaft Variation (CASE) relearn synchronizes the new PCM with your engine’s crankshaft position sensor. In most cases, you will need to perform this procedure after installation. Many mid-range scan tools have this function, or any local repair shop can perform it for you quickly.
How do I provide my VIN?
After you complete your purchase, simply reply to your order confirmation email with your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information.
Is this compatible with other part numbers?
Yes, this 2004-2005 Envoy XUV PCM is designed to be a direct replacement for a wide range of original part numbers, including 12574976, 12577955, 12584593, 16255757, and 19210065. Please see the full compatibility list on this page.
What if my original part number isn’t on the list?
For your peace of mind, please contact us with your VIN before ordering if you do not see your part number listed. We will be happy to verify compatibility to ensure you receive the correct part for your vehicle.
Does this fit my 5.3L V8 model?
No, this particular unit is specifically for vehicles equipped with the 4.2L inline-6 cylinder engine. We offer different modules for V8 models. Please check our other listings or contact us for assistance.