Is Your Truck or SUV Running Rough? Get It Back in Top Form.
There’s nothing more frustrating than when your dependable GM truck or SUV starts acting up. Whether it’s a 2004 Chevy SSR that’s lost its roar, a workhorse Silverado that won’t start, or a family-hauling Tahoe with a persistent check engine light, a faulty Powertrain Control Module (PCM) is often the culprit. You need a reliable solution that gets you back on the road without the guesswork. This is the definitive, pre-programmed engine computer that restores your vehicle’s performance and reliability, just like the day it left the factory.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing PCM is the likely cause. This module is the direct solution for:
- Check Engine Light with communication-related codes (e.g., P0601, P0606)
- Engine stalling, stumbling, or rough idling
- Failure to start or intermittent starting problems
- Poor fuel economy and decreased engine power
- Harsh or erratic automatic transmission shifting
- Inoperative gauges or other electronic glitches
Replacing your old module with this professionally programmed 2004 Chevy SSR PCM 12586242 will resolve these issues and restore communication between your vehicle’s critical systems.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash this computer with the latest GM software updates using your vehicle’s unique VIN. This ensures it works perfectly with your specific options and systems right out of the box.
- ✔ Plug-and-Play Installation: Because it arrives programmed, the installation process is dramatically simplified. In most cases, a straightforward security relearn procedure is all that’s needed to get you running again.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN, ensuring a perfect fit for your 2004 GM truck or SUV.
- ✔ Restores Peak Drivability: By installing a correctly functioning and updated PCM, you’ll restore the precise fuel delivery, ignition timing, and transmission control your vehicle was designed for.
- ✔ Cost-Effective Dealership Alternative: Get the correct, professionally programmed module without the high costs, long wait times, and scheduling hassles of a dealership service center.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty, giving you confidence and security in your repair.
Expert Insight: The “No-Communication” Nightmare Solved
We recently worked with a customer whose 2004 Sierra 2500 had a baffling no-start condition. His local shop had replaced multiple sensors and even the fuel pump, but their diagnostic scanner still couldn’t communicate with the engine computer. The truck was dead in the water. After confirming the service number on his original module, we sent him a pre-programmed 2004 Chevy SSR PCM 12586242. He installed it, performed the 10-minute security relearn with just his ignition key, and the truck fired right up. It wasn’t a bad sensor or a wiring issue—it was an internal failure in the original computer, a common issue on these vehicles. This single part saved him from hundreds more in diagnostic fees and unnecessary repairs.
Frequently Asked Questions
Do I need to do anything after I install this PCM?
Yes. After installation, you will need to perform a security relearn procedure, also known as a VATS relearn. This procedure pairs the new computer to your vehicle’s anti-theft system. It can typically be done in about 10-15 minutes using only the ignition key and does not require a special scan tool.
How do I provide you with my VIN?
After you complete your purchase, simply send us a message with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your part without it. Please double-check the VIN for accuracy before sending.
Is this the correct part for my truck or SUV?
This PCM is compatible with a wide range of 2004 GM vehicles. The best way to confirm fitment is to match the service number on your current computer’s sticker to one of the numbers listed, such as 12586242 or YHTN. The fitment list provided is a guide, but matching the service number is the most accurate method.
What if my original service number isn’t on the list?
If your service number is different, please contact us before ordering. We can verify compatibility or direct you to the correct part for your specific vehicle to ensure you get the right solution the first time.
Where is the PCM located on my 2004 GM vehicle?
The location varies slightly by model. On most trucks and full-size SUVs (Silverado, Sierra, Tahoe, Yukon, Escalade), it is located on the driver’s side of the engine compartment, under the battery tray. On mid-size SUVs (Trailblazer, Envoy, Rainier), it is typically located in the engine bay next to the air filter box.