Get Your Truck Back on the Road, Fast.
There’s nothing more frustrating than a vehicle you can’t rely on. If your 2004 GM truck or SUV is suffering from a persistent check engine light, stalling, rough idling, or a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s a breakdown in the dependability you count on. We offer the definitive solution: a professionally programmed 12586242 PCM, ready to install right out of the box, getting you back to work and back to your life with confidence.
Common Symptoms of a Failing PCM & Your Direct Solution
A faulty engine computer can cause a wide range of confusing and intermittent issues. If you’re experiencing any of the following, this module is the solution you need:
- Persistent Check Engine Light: Especially with internal module error codes like P0601, P0602, or P0606.
- Engine Performance Problems: Unexplained stalling, rough running, hesitation, or a sudden drop in fuel economy.
- No-Start Condition: The engine cranks but refuses to start, even with a good battery and starter.
- Erratic Transmission Shifting: Harsh or delayed shifts that aren’t related to a mechanical transmission issue.
Instead of wrestling with a trip to the dealership, our pre-programmed 12586242 PCM provides a simple, direct, and effective repair. We handle the complex programming so you can handle the straightforward installation.
Features & Benefits
- ✔ Plug & Play Installation: This unit arrives pre-programmed to your vehicle’s specific VIN. No extra trips to the dealer for expensive flashing are required.
- ✔ Updated GM Software: We flash each module with the latest software updates from General Motors, ensuring optimal performance and efficiency.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, and more.
- ✔ Solves Common Issues: The perfect fix for a wide range of drivability problems, restoring your vehicle’s original performance and reliability.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician, I’ve seen countless DIYers get stuck after installing a generic, unprogrammed computer from a junkyard. On these 2004 GM vehicles, the PCM is a critical part of the anti-theft system (VATS/Passlock). Without the correct VIN programming, the system won’t recognize the module, and your engine simply will not start. Our process of programming the 12586242 PCM to your VIN before shipping eliminates this major roadblock, saving you time, money, and the headache of a vehicle that’s still dead in your driveway.
Frequently Asked Questions
What happens after I place my order?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information. Once we have your VIN, our technicians will program the module, and it will typically ship within 1-2 business days.
Is this installation truly plug-and-play?
Yes. Because we program the computer to your specific VIN, it is ready for installation upon arrival. In some rare cases, a security relearn procedure may be required, which is a simple process that can be done without any special tools. Instructions are readily available online for this procedure.
How do I confirm this part is correct for my vehicle?
The best way is to match the service number on your current computer to one of the numbers listed, such as 12586242, YFKH, YFXL, etc. Our comprehensive fitment list also details the compatible makes and models. If you are unsure, please contact us with your VIN before ordering.
Do I need to send my old computer (core) back?
No core return is required for this part. You can keep or dispose of your old module at your convenience.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (common codes include P0601-P0606), this replacement module will solve the problem. However, if the light is on due to a faulty sensor or other mechanical issue, that separate problem will still need to be addressed.