Restore Peak Performance to Your GM Truck or SUV
Is your 2004 GMC Yukon XL 1500, Sierra, or Tahoe suffering from frustrating issues like a persistent check engine light, erratic shifting, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer of your vehicle. Don’t let a faulty module keep your reliable truck off the road. This fully programmed PCM is the definitive solution to restore your vehicle’s performance and get you back to driving with confidence.
Common Symptoms of a Failing PCM & Your Solution
A failing engine computer can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, a faulty module is the likely culprit:
- Check Engine Light: Specifically for communication error codes like P0600, P0601, P0602, P0605, or P0606.
- Poor Engine Performance: Noticeable loss of power, reduced fuel economy, engine stalling, or rough idling.
- Transmission Issues: Harsh or delayed shifting, or getting stuck in one gear (limp mode).
- No-Start Condition: The engine cranks but refuses to start, often due to a lack of fuel or spark command from the PCM.
This replacement module is the most reliable way to solve these issues. We take the guesswork out of the repair by programming this unit specifically to your vehicle’s VIN before it ships. This ensures that your 2004 Yukon XL 1500 PCM communicates perfectly with all other systems in your vehicle, just like the original from the factory.
Features & Benefits
- ✔ Simple Plug & Play Installation: This module arrives programmed to your vehicle’s specific VIN. No expensive dealer trips for flashing are required. In most cases, you can install it yourself in under an hour.
- ✔ Flashed with GM Updates: We program your PCM with the latest factory software updates from General Motors, ensuring optimal performance, fuel efficiency, and transmission shifting.
- ✔ Guaranteed Compatibility: A direct replacement for service number 12586242 and many others (see list below), ensuring a perfect fit and function for your vehicle.
- ✔ Solve Drivability Issues: The most effective way to correct common problems like harsh shifting, poor idle, stalling, and false sensor codes caused by a failing computer.
- ✔ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your purchase.
An Expert Tip from Our Lead Technician
As a technician with over 20 years on the floor, I can’t stress this enough: always check your battery terminals and main engine grounds before replacing a PCM. A weak battery or a corroded ground cable can mimic PCM failure, leading to misdiagnosis. A simple check can save you time and money. Once you’ve confirmed those are solid, this programmed 2004 Yukon XL 1500 PCM is your most reliable path to a lasting repair.
Frequently Asked Questions
Do I need to get this computer programmed?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during or after checkout, and it will arrive ready to install.
What information do you need from me?
All we need is your vehicle’s 17-digit Vehicle Identification Number (VIN). This allows us to flash the module with the exact software and calibrations for your truck’s specific options.
Where is the PCM located on my 2004 GM truck?
On most 2004 GM full-size trucks and SUVs like the Silverado, Sierra, Tahoe, and Yukon, the PCM is located in the engine bay on the driver’s side, under the battery tray. On mid-size SUVs like the Trailblazer and Envoy, it’s typically located next to the air filter box.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls the engine and transmission. If your transmission problems are electronic in nature (caused by faulty signals from the computer), this programmed 2004 Yukon XL 1500 PCM is designed to correct them and restore smooth shifting.
Is any other setup required after installation?
For some vehicles, a security relearn procedure may be necessary after installation. This is a simple process that pairs the new computer to your vehicle’s anti-theft system and typically involves turning the key in the ignition in a specific sequence. We include instructions for this straightforward procedure.
Is this a genuine GM part?
This is a high-quality, tested original equipment part that has been programmed with the latest official GM software for your vehicle. It is designed to meet or exceed original factory performance.