Restore Peak Performance to Your GM Truck or SUV
Is your dependable GM truck or SUV suddenly plagued by a persistent check engine light, erratic shifting, or frustrating no-start conditions? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these complex issues. This replacement Engine Control Module, corresponding to GM service number 12602802, is the definitive solution to get your vehicle back on the road, running with the power and reliability you expect. We take the guesswork and dealership hassle out of the equation by pre-programming this unit specifically to your vehicle’s VIN before it ships.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty PCM is the likely cause. This module is designed to resolve these problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to internal module failure (e.g., P0601, P0606)
- Harsh or incorrect transmission shifting
- Poor fuel economy and engine performance
- Engine stalling or intermittent no-start conditions
- Communication errors with other vehicle modules
By installing our VIN-programmed Programmed 12602802 PCM, you are not just replacing a part; you are restoring the central nervous system of your vehicle’s powertrain with the latest software updates from GM for optimal operation.
Features & Tangible Benefits
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring it’s ready for a straightforward installation without needing a trip to the dealer.
- ✔ Latest GM Software Updates: Your module arrives with the newest factory calibrations, often improving upon the original software for better performance and efficiency.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802, covering a wide range of GM trucks and SUVs.
- ✔ Restored Drivability: Eliminate the frustrating symptoms of a bad computer and enjoy smooth acceleration, crisp shifting, and consistent engine operation.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight from the Garage
“I’ve seen it a hundred times: a customer brings in a 2005 Silverado 2500 with a stack of unrelated trouble codes—O2 sensors, EVAP, transmission solenoids. They’ve spent hundreds replacing good parts. The real issue? The PCM’s internal driver circuits were failing, sending bad signals. A failing computer can make a perfectly healthy engine act erratically. Installing a properly Programmed 12602802 PCM doesn’t just clear the codes; it fixes the root cause, saving you time, money, and endless frustration.”
Frequently Asked Questions
How do I provide my VIN for programming?
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 the programming is essential for the module to function in your vehicle.
Will I need to do anything else after installing this PCM?
In most cases, this is a direct installation. However, some vehicles may require a security relearn procedure (often called Passlock or Passkey) and a Crankshaft Variation Relearn (CASE relearn). These procedures can typically be performed with a capable scan tool or by following a specific sequence of key cycles, which can be found in service manuals or online resources.
What is a PCM and why is it important?
The Powertrain Control Module (PCM) is the main computer that controls your vehicle’s engine and transmission. It manages everything from fuel injection and ignition timing to emission controls and transmission shift points. A functioning PCM is critical for performance, fuel economy, and reliability.
How can I be sure this fits my truck/SUV?
This module fits a wide range of GM vehicles from approximately 2003 to 2007. Please review the detailed compatibility list on this page. The most reliable method is to match the service number on your current computer to 12602802 or one of the other compatible numbers listed. Providing your VIN for programming ensures it is correctly calibrated for your specific model and options.
What does the one-year replacement warranty cover?
This unit is backed by our one-year replacement warranty. This covers the module itself against defects in function or workmanship for a period of one year from the date of purchase. If the unit fails within this period, we will provide a replacement.