Get Your Truck Back on the Job, Fast.
When your truck’s Powertrain Control Module (PCM) fails, your entire operation grinds to a halt. You’re faced with a vehicle that won’t start, runs rough, or throws confusing check engine lights, costing you time and money. This replacement module, part number 12602801, is the definitive, no-nonsense solution to get your vehicle out of the garage and back to work. We take the guesswork and the dealership hassle out of the equation by pre-programming this unit specifically to your vehicle’s VIN before it ever leaves our facility. This is the straightforward repair you need to restore your truck’s performance and reliability.
Common Symptoms & Your Solution
A failing PCM can manifest in a variety of frustrating ways. If you’re experiencing any of the issues below, this module is the solution you’ve been looking for. This programmed 12602801 PCM is engineered to resolve these exact problems and restore factory performance.
- Engine cranks but refuses to start
- Poor or erratic automatic transmission shifting
- Stalling, rough idling, or misfires
- Significant drop in fuel economy
- Check Engine Light with communication codes (like U0100) or internal processor codes (like P0601, P0606)
- Various dash lights illuminating for no apparent reason
Features & Tangible Benefits
- ✔ VIN-Specific Programming Included: We flash the module with the latest GM software updates using your vehicle’s VIN. This ensures perfect compatibility and function right out of the box, saving you a costly trip to the dealer.
- ✔ Restored Engine Performance: By installing a correctly functioning computer, you’ll restore the precise fuel delivery, spark timing, and transmission control your engine needs to run efficiently and powerfully.
- ✔ Direct-Fit OEM Replacement: This unit is designed to replace part numbers 12602801, 12589462, and 89017749, guaranteeing a perfect physical fit and seamless electronic integration.
- ✔ Plug-and-Play Installation: Once you receive the module, installation is straightforward. Simply disconnect the battery, swap the old module for the new one, and reconnect. A security relearn procedure may be required, which is a simple process you can do yourself.
- ✔ This unit is backed by our one-year replacement warranty. We stand behind our parts, giving you the confidence to complete your repair.
An Expert’s Note: I’ve seen countless truck owners waste days and hundreds of dollars dealing with a bad PCM. The old process was a nightmare: get the truck towed to a dealer, wait for them to diagnose it, pay for an expensive module, and then pay several hundred more in labor and programming fees. This programmed 12602801 PCM changes the game. It puts the power back in your hands, allowing you to perform a professional-level repair in your own driveway and get your vehicle running in a fraction of the time.
Don’t let a faulty computer dictate your schedule. This is the most efficient path to a reliable, long-term fix. By providing us with your VIN at checkout, you ensure that the brain of your engine’s operation is perfectly matched to your vehicle’s specific systems. This attention to detail is critical for the complex electronics in modern trucks and vans. Order your programmed 12602801 PCM today and get back to what matters.
Frequently Asked Questions
What exactly does a PCM do?
The Powertrain Control Module (PCM), often called the Engine Control Module (ECM), is your vehicle’s central computer. It controls critical functions like fuel injection, ignition timing, transmission shifting, and emissions systems to ensure the engine runs efficiently and reliably.
Is this module difficult to install?
No. Because we program it to your VIN, the most complex part of the job is already done. Installation typically involves disconnecting the vehicle’s battery, unplugging the electrical connectors from the old PCM, unbolting it, and then installing the new one in its place. In many cases, a simple security relearn procedure (the “key-on, key-off” method) is needed afterwards, which takes about 30 minutes and requires no special tools.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for the programming process.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of your existing PCM (indicated by codes like P0601-P0606) or a communication fault (like U0100), this part is the correct solution. However, if the light is on due to a faulty sensor (like an O2 sensor or MAF sensor), that sensor will still need to be replaced separately.
How can I be sure this fits my vehicle?
This module is compatible with a wide range of GM trucks and vans from 2005-2007. Please refer to the detailed fitment list on this page. The most important step is to match one of the compatible part numbers (12602801, 12589462, 89017749) to your original unit. Programming to your VIN ensures it works correctly with your vehicle’s specific options.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty. This provides coverage against defects in the module itself, giving you peace of mind with your purchase.