Is Your Suburban Acting Up? Get Back on the Road with Confidence.
If you’re dealing with frustrating issues like a persistent check engine light, erratic engine behavior, harsh shifting, or even a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. As the brain of your vehicle, when the PCM falters, it can cause a cascade of problems that can be difficult to diagnose. I’ve spent two decades under the hood of trucks just like yours, and I’ve seen firsthand how a faulty module can sideline an otherwise perfectly good vehicle.
Expert Pro Tip: Before you condemn your old PCM, take a moment to inspect the main ground connections. On these GM trucks, a common ground point is on the engine block or frame rail near the module. Over time, corrosion can build up, creating resistance that mimics PCM failure. A quick cleaning with a wire brush can sometimes solve intermittent electrical gremlins and save you a lot of diagnostic headaches.
The Right Part, Programmed Correctly the First Time
This isn’t just a part in a box; it’s a complete solution. We are providing a genuine GM Electronic Control Module (Part #89017734) that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates perfectly with your engine, transmission, and all other onboard systems. We load the latest GM-authorized software updates, which can often resolve performance and drivability issues that were present even before your original module failed.
Why Our Programmed 2003-2006 Suburban 1500 PCM is the Smart Choice:
- โ Eliminate Guesswork: Solves common symptoms like stalling, poor fuel economy, and failed emissions tests.
- โ VIN-Programmed: We flash the module with your truck’s exact VIN and the newest GM software before it ships.
- โ True Plug-and-Play: No expensive trip to the dealership for programming is required.
- โ Guaranteed Compatibility: This module directly replaces service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802.
- โ Restored Performance: Get back the smooth, reliable performance you expect from your Suburban.
Simple Installation to Get You Moving Again
You don’t need to be a master technician to install this module. With a few basic hand tools, you can have your truck running right in your own driveway. A customer’s ’05 Tahoe came in last week with a no-start condition that two other shops had misdiagnosed. We identified a failed PCM driver circuit, sent them one of our pre-programmed modules, and they had it installed and running in under an hour, saving them hundreds on labor and towing.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most 2003-2006 Suburbans and related GM trucks, the PCM is located on the driver’s side of the engine bay, under the battery tray or near the airbox.
- Disconnect the Connectors: Carefully lift the locking tabs and unplug the wiring harness connectors from the old module.
- Swap the Modules: Remove the old PCM from its mounting bracket and install the new one.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module and reconnect your battery terminal.
- Perform Security Relearn: After installation, you will need to perform a simple security relearn procedure (often called a Passlock or VATS relearn). This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This syncs the new PCM with your vehicle’s anti-theft system.
After your purchase, simply send us your VIN, and we’ll handle the rest. We’ll program your module and ship it out, ready for installation. It’s the most straightforward and reliable way to fix your vehicle’s computer issues and restore its proper function.