The Brains of Your Operation: Restoring Performance to Your GM Truck or SUV
The Powertrain Control Module, or PCM, is the central computer of your vehicle, managing everything from fuel injection and ignition timing to transmission shift points and emissions systems. When it begins to fail, it can cause a cascade of confusing and frustrating problems that can be difficult to diagnose. This replacement PCM, compatible with service number 28042802, is the definitive solution to restore your vehicle’s performance, reliability, and efficiency. We take the guesswork out of the repair by programming the module to your vehicle’s specific VIN before it ever leaves our facility.
Is Your Vehicle’s Computer Causing These Headaches?
A faulty PCM can manifest in numerous ways, often mimicking other mechanical or electrical failures. If you’re experiencing any of the following symptoms, a failing computer could be the root cause. This is especially true if you’ve been chasing codes or replacing parts with no success.
- ✔ Persistent Check Engine Light (CEL), especially with communication error codes (U-codes).
- ✔ Unexplained drop in fuel economy.
- ✔ Rough, erratic, or stalling engine idle.
- ✔ Harsh, delayed, or incorrect transmission shifting.
- ✔ Complete no-start or intermittent starting conditions.
- ✔ Engine misfires or hesitation during acceleration.
- ✔ Failure to pass state emissions inspections.
The Direct-Fit Solution: Your Programmed 2003 SSR PCM
This isn’t just an off-the-shelf part; it’s a comprehensive solution. We use your vehicle’s Vehicle Identification Number (VIN) to load the latest, most stable GM-certified software onto the module. This ensures that it communicates flawlessly with all other systems in your truck or SUV, from the engine and transmission to the anti-lock brakes and instrument cluster. By matching the software to your VIN, we eliminate the need for expensive dealership programming, making this a straightforward and cost-effective repair. This module is a direct replacement for a wide range of popular GM vehicles, including the Chevrolet Silverado, Tahoe, Suburban, Avalanche, SSR, GMC Sierra, Yukon, Cadillac Escalade, and Hummer H2.
From the Diagnostic Bay
We had a 2005 Silverado 2500 in the shop with a persistent P0700 transmission code and harsh shifting between first and second gear. The owner had already spent a small fortune replacing the transmission solenoids and fluid, but the problem remained. After hours of chasing wires and checking connectors, we hooked up our diagnostic scanner and monitored the PCM data stream. We found erratic voltage signals from the main processor that were sending corrupt commands to the transmission. A new, properly programmed PCM fixed the “transmission” problem instantly. It’s a classic case of the brain sending bad signals to the body, and a reminder that the computer should always be considered in complex diagnostic situations.
Why Choose Our Pre-Programmed PCM?
- ✔ VIN-Specific Programming: We flash the module with the latest GM calibration for your exact vehicle, ensuring perfect compatibility and optimal performance.
- ✔ Plug-and-Play Design: Arrives ready for installation. In most cases, all you need to do is perform a simple security relearn procedure that takes about 30 minutes with just your key.
- ✔ Restored Drivability: Fixes common issues related to a failing computer, restoring fuel efficiency, smooth engine operation, and proper transmission function.
- ✔ Broad Compatibility: A reliable replacement for multiple service numbers including 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802.
- ✔ Quality Inspected: Each unit is inspected and its communication ports are verified to ensure functionality before being programmed and shipped.
Installation and Setup
Installation is straightforward for a DIY mechanic with basic tools. First, disconnect the negative battery terminal. The PCM is typically located in the engine bay, either on the driver’s side next to the airbox or under the battery tray. Carefully disconnect the electrical connectors (they have locking tabs) and unbolt the module. Install the new module, reconnect the connectors, and reconnect the battery. After installation, you will likely need to perform a security relearn procedure (often called a CASE relearn or Passlock relearn) to sync the new PCM with your vehicle’s anti-theft system. This procedure can be done without special tools and instructions are readily available online or can be provided upon request.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive an email with instructions. You can simply reply to that email with your 17-digit VIN, or include it in the ‘notes to seller’ section during checkout.
Will this fix my specific problem?
While this PCM is the solution for a wide range of issues, it’s crucial that your vehicle has been properly diagnosed. This part will correct problems directly caused by a faulty PCM, but it will not fix underlying mechanical issues, faulty sensors, or wiring problems.
What is the security relearn procedure?
It’s a simple process that syncs the new PCM to your vehicle’s anti-theft system. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating this cycle three times. This allows the components to recognize each other.
Is this part difficult to install?
For someone with basic mechanical skills, it is not difficult. It involves disconnecting the battery, unplugging a few connectors, and removing a few bolts. The most important part is ensuring the battery is disconnected before you begin.
My original part number is different, will this still work?
Yes. This module replaces several different GM service numbers. As long as your vehicle’s year, make, and model are on the compatibility list, our VIN programming ensures it will work correctly as a direct replacement.