Is Your Truck 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 GMC Yukon XL 2500 is experiencing bizarre 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 failure that compromises your truck’s power, efficiency, and dependability. This replacement module is the definitive solution to restore your vehicle’s performance and your peace of mind.
Common Symptoms of a Failing GM PCM & Your Direct Solution
The PCM is the brain of your vehicle, controlling everything from fuel mixture and spark timing to transmission shifting. When it fails, the symptoms can be confusing and wide-ranging. You might be experiencing:
- Check Engine Light with communication error codes like P0601, P0602, or P0606.
- Engine Stalling or Misfiring for no apparent reason.
- Harsh or Erratic Shifting from the transmission.
- Reduced Fuel Economy as the engine struggles to run efficiently.
- Complete No-Start Condition where the engine cranks but won’t fire up.
Instead of spending a fortune at the dealership, this pre-programmed 2004 GMC Yukon XL 2500 PCM provides a simple, direct-fit solution. We take the guesswork out of the repair by flashing the unit with the latest GM software updates, specifically matched to your vehicle’s VIN. It arrives ready for a straightforward, plug-and-play installation.
Features & Benefits
- โ Plug & Play Installation: This unit arrives pre-programmed to your vehicle’s specific VIN. No expensive trip to the dealership for programming is required.
- โ Restored Performance: Loaded with the latest GM-approved software updates to ensure optimal engine performance, fuel efficiency, and smooth transmission shifting.
- โ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, and many others, ensuring a perfect fit for a wide range of GM trucks and SUVs.
- โ Solves Common Issues: The definitive fix for common diagnostic trouble codes (DTCs) and frustrating drivability problems caused by a faulty original computer.
- โ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
From the Mechanic’s Bench: We had a customer with a 2004 Sierra 2500 work truck that had a persistent, harsh 1-2 shift that multiple shops couldn’t diagnose. They had replaced sensors and solenoids with no luck. The issue was a failing driver inside the original computer. Installing a properly programmed 2004 GMC Yukon XL 2500 PCM (the same part) solved the problem instantly. The brain controls everythingโdon’t overlook it when chasing stubborn electrical gremlins.
Frequently Asked Questions
Do I need to do any programming myself?
No. This PCM arrives fully programmed to the VIN you provide. The installation is plug-and-play. In some cases, a Crankshaft Variation Relearn (CASE relearn) may be necessary, which can be performed with a compatible high-end scan tool.
How do I provide my vehicle’s VIN?
After you complete your purchase, we will send you instructions on how to reply with your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information.
Is this the correct part for my truck?
This module fits a wide range of 2004 GM trucks and SUVs. The best way to confirm is to check the service number on your original computer’s label. If it matches 12586242 or any of the other numbers listed in the description, this is the correct part for you.
What is a CASE Relearn?
A CASE (Crankshaft Angle Sensor Error) Relearn is a procedure that allows the new PCM to learn the specific position of your engine’s crankshaft. If not performed, you may have a check engine light with code P1336. This procedure does not prevent the vehicle from running but is required to clear the code.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM (which also acts as the TCM in these vehicles) controls transmission line pressure and shift points. A faulty module is a very common cause of harsh or erratic shifting in these GM trucks.