Restore Peak Performance to Your GM Truck or SUV
Is your Hummer H2, Silverado, Sierra, or Tahoe suffering from baffling electrical issues, poor engine performance, or a persistent check engine light? The Powertrain Control Module (PCM), the central computer of your vehicle, is often the culprit. This replacement PCM, part number 28042802, is the definitive solution to restore your vehicle’s factory performance, drivability, and reliability. It arrives at your door pre-programmed to your specific Vehicle Identification Number (VIN), eliminating the need for an expensive trip to the dealership.
The Brain of Your Vehicle’s Operation
The PCM is responsible for managing a complex network of systems, including fuel injection, ignition timing, transmission shifting, and emissions controls. When it begins to fail, it can create a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs. Replacing a faulty module with a correctly programmed unit is the most effective way to solve these deep-rooted issues and get your truck running smoothly again.
From the Diagnostic Bay
We once had a 2005 Hummer H2 in the shop with a list of complaints as long as your arm: intermittent stalling, hard shifting from first to second, and a check engine light that threw codes for three different sensors. The owner had already replaced the throttle body and a transmission solenoid with no luck. After confirming the wiring and sensors were good, we suspected the PCM. The internal drivers that control those components were failing intermittently. We installed a VIN-programmed PCM, performed the security relearn, and the H2 ran like it just rolled off the assembly line. It’s a classic case of treating the disease, not just the symptoms.
Symptoms of a Failing 2003-2007 Hummer H2 PCM
If you’re experiencing any of the following issues, a failing powertrain control module could be to blame. This module is a direct replacement for a wide range of GM trucks and SUVs, ensuring a perfect fit and restored function.
- ✔ Check Engine Light: The most common symptom, often with communication-related error codes (U-codes) or multiple, unrelated sensor codes.
- ✔ Engine Performance Problems: Noticeable loss of power, hesitation during acceleration, rough idling, or engine stalling.
- ✔ Poor Fuel Economy: An inefficiently running engine, managed by a faulty PCM, will consume more fuel than usual.
- ✔ Transmission Issues: Erratic or harsh shifting, or the transmission getting stuck in one gear (limp mode).
- ✔ No-Start Condition: The vehicle cranks but refuses to start because the PCM is not correctly managing the fuel and spark.
- ✔ Failed Emissions Test: The PCM directly controls the emissions system, and a fault will almost certainly cause a test failure.
Plug-and-Play Solution with VIN Programming
Forget the hassle and expense of dealership programming. Our service is designed to be as simple as possible. When you place your order, you provide us with your vehicle’s VIN. Our technicians then flash the module with the latest, most stable GM software calibration specific to your truck. This ensures that the PCM works seamlessly with your vehicle’s existing components and systems. The unit you receive is ready for installation right out of the box. In most cases, a simple security relearn procedure is all that’s needed, which can often be performed without any special tools.
This module is a direct replacement for service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802, covering a vast range of popular GM models including the Cadillac Escalade, Chevy Avalanche, Silverado, Suburban, Tahoe, GMC Sierra, Yukon, and more from 2003 to 2007.
Frequently Asked Questions
Do I need to get this PCM programmed by a dealer?
No. This PCM comes fully programmed to your vehicle’s specific VIN before it is shipped. It is ready for installation upon arrival.
Where can I find my vehicle’s VIN?
Your 17-digit VIN can be found on your vehicle’s registration, insurance card, the driver’s side door jamb sticker, or on the dashboard visible through the windshield on the driver’s side.
Is installation difficult?
The physical installation is typically straightforward, involving disconnecting the battery and removing a few bolts and electrical connectors. However, a security relearn procedure may be required. We recommend professional installation if you are not comfortable with automotive electrical work.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty PCM, this replacement part will resolve the issue. It’s crucial to ensure the PCM is the actual source of the problem before ordering.
What is a security relearn procedure?
This is a simple process that syncs the new PCM with your vehicle’s anti-theft system. For most GM vehicles of this era, it involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. Instructions are widely available online for your specific model.