Restore Peak Performance to Your GM Truck or SUV
Is your 2004 GMC Envoy, Silverado, Tahoe, or another GM vehicle suffering from frustrating issues like a persistent check engine light, erratic shifting, stalling, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM). Don’t let a faulty computer keep you off the road. This professionally programmed engine computer is the reliable, straightforward solution to get your vehicle running like new again, restoring the power and dependability you rely on every day.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of problems that are often misdiagnosed. If you’re experiencing any of the following, this module is the definitive fix:
- Unexpected stalling or rough idling
- Failure to pass emissions tests
- Poor fuel economy
- Harsh or incorrect automatic transmission shifting
- Engine performance codes (DTCs) such as P0601, P0606, or communication errors
- Complete no-start condition where the engine cranks but won’t fire
This replacement 2004 Envoy XUV PCM 12586242 is the central command unit for your engine and transmission. By replacing your old, failing module with this fully updated unit, you are directly addressing the root cause of these issues and restoring your vehicleโs factory-specified performance and efficiency.
Features & Benefits
- โ VIN-Specific Programming: We program this module to your vehicle’s exact VIN with the latest GM software updates. This ensures perfect compatibility and eliminates the need for an expensive trip to the dealership.
- โ Simple Installation: Because it arrives pre-programmed, installation is straightforward. In most cases, you can simply disconnect the battery, swap the modules, and reconnect. No complex tools or procedures are required.
- โ Broad Compatibility: This unit is a direct replacement for a wide range of service numbers, including 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN.
- โ Restored Drivability: Experience smoother shifting, consistent engine performance, and improved fuel efficiency once your vehicleโs brain is functioning correctly.
- โ Guaranteed Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of a Pre-Programmed Module
As a technician with over 20 years of experience, I’ve seen countless vehicle owners waste time and money on used modules from a salvage yard. Those units often have incorrect software or are locked to the donor vehicle, requiring a tow to the dealer for expensive programming. Our process bypasses that entire headache. We handle the critical programming for your specific 2004 Envoy XUV PCM 12586242 before it even ships, using your VIN to load the correct GM-certified calibration files. This means you get a part that’s truly ready to install, saving you hundreds of dollars and significant downtime. Itโs the closest you can get to a plug-and-play solution for a complex component.
Take control of your repair and get your truck or SUV back on the road with confidence. Simply provide your VIN after purchase, and we’ll handle the rest, shipping you a module that’s ready to restore your vehicle’s health and performance. This is the smart, efficient way to solve your PCM problems for good.
Frequently Asked Questions
Do I need to send you my old computer?
No, there is no core charge or need to send us your old module. This is a direct purchase.
What is the programming process?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. We use this number to access the latest official GM software updates for your specific make, model, and options, and then flash that data onto the module before shipping.
Is any additional programming required after installation?
In most cases, no further programming is needed. However, some vehicles may require a security relearn procedure (often called a CASE relearn or anti-theft relearn) which can typically be done without special tools. Instructions for this simple procedure are widely available online for your specific vehicle.
How do I find my service number to confirm compatibility?
Your original module will have a sticker with the service number on it. This module replaces part number 12586242 and many others listed in the description. As long as we have your VIN, we will ensure the programming is a perfect match for your vehicle’s requirements.
Where is this module located on my vehicle?
The location varies. On many trucks and large SUVs like the Silverado or Tahoe, it’s under the hood, on the driver’s side, often under the battery tray. On models like the Envoy, Trailblazer, and Rainier, it’s typically located next to the air filter box in the engine bay.