Restore Peak Performance to Your GM Truck or SUV
Is your 2004 Trailblazer, Sierra, Silverado, or other GM vehicle suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or erratic transmission shifting? A failing Powertrain Control Module (PCM) is often the culprit, acting as the brain of your vehicle and controlling everything from fuel mixture to spark timing. Don’t let a faulty computer keep you off the road. This fully programmed 12586242 PCM is the definitive, hassle-free solution to get your vehicle running reliably again.
Common Symptoms of a Failing GM PCM & Your Solution
If you’re experiencing any of the following, a replacement PCM is the most likely fix:
- Engine misfires, poor acceleration, or reduced power
- Decreased fuel economy
- Vehicle won’t start or stalls intermittently
- Harsh or unpredictable automatic transmission shifting
- Check Engine Light with communication error codes (like P0601, P0605, or U-codes)
- Inaccurate instrument panel readings
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and extra cost out of the repair by pre-programming this Programmed 12586242 PCM to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures it communicates perfectly with your vehicle’s existing systems right out of the box.
Features & Benefits
- ✔ Ready for Installation: Arrives programmed to your vehicle’s specific VIN, eliminating the need for expensive dealer programming or special tools.
- ✔ Optimized Performance: Flashed with the latest GM software updates to correct known factory bugs and improve engine efficiency and drivability.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN, ensuring a perfect fit.
- ✔ Restored Reliability: Each module is meticulously inspected and programmed to restore your vehicle’s core engine management functions to factory specifications.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Mechanic’s Insight: Many people don’t realize that a PCM isn’t just a generic part. In modern GM vehicles, it’s tied directly to the anti-theft system (PassLock/VATS), transmission, and even body control modules. Simply swapping a used computer from another vehicle will almost always result in a no-start condition. Our VIN programming service handles all of that for you. We ensure the module is a perfect electronic match, saving you a costly trip to the dealership and hours of diagnostic headaches. This is the same process a professional shop uses, delivered right to your door.
By choosing this Programmed 12586242 PCM, you are not just buying a part; you are investing in a reliable repair that restores the heart of your vehicle’s electronics. Get your truck or SUV back to the dependable workhorse it was meant to be.
Frequently Asked Questions
Do I need to do any programming after I receive this PCM?
No. This PCM arrives pre-programmed to the VIN you provide. In most cases, it is a direct plug-and-play installation. Some vehicles may require a simple security relearn procedure, which typically involves cycling the key in the ignition and can be done without any special tools.
How do I provide my vehicle’s VIN?
After you complete your purchase, you can add your 17-digit VIN to the order notes or reply to your order confirmation email. We must have your VIN to program the module before we can ship it.
Is this the right PCM for my vehicle?
This unit is a direct replacement for the service numbers listed in the description, including the primary number 12586242. Please check the service number on your current computer to ensure a match. If you are unsure, contact us with your VIN, and we will be happy to verify compatibility for you.
What is a “CASE Relearn”?
A Crankshaft Variation Relearn (or CASE Relearn) synchronizes the new PCM with the crankshaft position sensor. While many vehicles will run fine without it, for optimal performance and to prevent a potential P1336 trouble code, a CASE relearn using a compatible bi-directional scan tool is recommended after installation. Many local repair shops can perform this service quickly.
Will this fix my transmission shifting problems?
The PCM (also known as the ECM or engine computer) controls both engine and transmission functions on these GM vehicles. If your shifting issues, such as hard shifts or incorrect gear selection, are caused by a faulty computer, this Programmed 12586242 PCM will resolve them.