Is Your GM Truck or SUV Acting Up?
There’s nothing more frustrating than a vehicle that won’t run right. Maybe your check engine light is glaring at you, your truck is refusing to start, or it’s running rough and getting terrible gas mileage. These aren’t just annoyances; they’re signs that the brain of your engine, the Powertrain Control Module (PCM), might be failing. When the PCM goes, it can cause a cascade of confusing problems that can be difficult to diagnose. You need a reliable solution that gets you back on the road without the dealership hassle and expense.
The Direct-Fit Solution: Programmed and Ready to Install
This is a direct-fit replacement Powertrain Control Module, service number 89017750, for a wide range of GM vehicles, including the iconic 2003 SSR. The biggest hurdle with replacing a modern PCM isn’t the physical installationโit’s the complex software programming. We solve that for you. Before we ship this module, our technicians will program it with the latest GM-certified software updates, specifically matched to your vehicle using the VIN you provide. This means it arrives at your door ready for a straightforward, plug-and-play installation.
From the Shop Floor: “A customer’s 2005 Silverado 2500 with the 6.0L came in last week with a persistent P0303 (Cylinder 3 Misfire). They had already replaced the spark plug, wire, and ignition coil, but the misfire wouldn’t go away. After scoping the ignition coil trigger signal, we saw a weak, erratic pulse from the PCM. The internal driver for that cylinder had failedโa common issue I’ve seen on over a hundred of these P12 controllers. We installed one of our pre-programmed modules, performed the security relearn, and the truck ran perfectly. The customer saved hundreds compared to a dealership repair and was back to work the same day.”
Common Symptoms of a Failing PCM:
If you’re experiencing any of the following, a faulty PCM could be the culprit:
- โ Check Engine Light is on with various communication or sensor codes
- โ Engine cranks but refuses to start
- โ Rough or unstable idle
- โ Noticeable decrease in fuel economy
- โ Harsh or erratic transmission shifting
- โ Stalling for no apparent reason
Easy Installation for Your 2003 SSR PCM
You don’t need to be a master mechanic to install this module. While a security relearn procedure is required after installation (a simple process that takes about 30 minutes with just your key), you’ll avoid a trip to the dealer for programming. For most trucks and SUVs like the Silverado, Sierra, and Tahoe, the process is simple:
- Safety First: Disconnect the negative battery terminal and wait 10 minutes for the system to discharge.
- Locate the PCM: On most compatible models, it’s found in the engine bay on the driver’s side, often under or next to the battery in a black plastic bracket. For the SSR, it’s typically located next to the air box.
- Disconnect Connectors: Carefully release the locking levers on the electrical connectors and pull them straight out from the module. Never force them.
- Swap the Module: Remove the old PCM from its mounting bracket and install the new one.
- Reconnect and Secure: Plug the connectors firmly into the new module, ensuring the locking levers click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: Follow the included instructions to sync the new PCM with your vehicle’s anti-theft system.
Guaranteed Compatibility
This module is a direct replacement for several service numbers, ensuring broad compatibility. Please verify your original part number or contact us with your VIN. This part is compatible with service numbers: 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. By providing your VIN at checkout, you guarantee that you receive a perfectly matched and correctly programmed module for your exact vehicle configuration.