Is Your GM Truck or SUV Running Rough?
If you’re dealing with a persistent check engine light, erratic shifting, a no-start condition, or poor fuel economy in your 2003-2007 GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your engine and transmission, its proper function is critical. When it fails, it can cause a host of frustrating and hard-to-diagnose issues. I’ve seen it hundreds of times in my shop: a great truck sidelined by a faulty electronic module.
The Simple, Reliable Solution: A VIN-Programmed PCM
Forget expensive dealership visits and the hassle of finding a local shop with the right programming equipment. This PCM, compatible with service number 89017750 and others, arrives at your door fully programmed with the latest GM software updates, specifically matched to your vehicle’s Vehicle Identification Number (VIN). This isn’t just a part; it’s a complete, ready-to-install solution that restores your vehicle’s performance and reliability.
Expert Pro Tip: Check Your Grounds First!
Before you replace your PCM, take 10 minutes to inspect and clean the main ground connections. A customer’s 2005 Sierra 2500 came in with classic PCM failure symptoms—random stalling and communication codes. The issue turned out to be a corroded ground strap between the engine block and the firewall. A simple cleaning with a wire brush saved him hundreds. Always verify your main power and ground circuits before condemning a module.
Why Choose Our 2003 – 2007 Silverado 3500 PCM?
This module is the definitive answer for a wide range of popular GM trucks and SUVs from this era, including the Silverado, Sierra, Tahoe, Yukon, Escalade, and Hummer H2. We handle the complex part so you can get back on the road.
- ✔ VIN-Programmed for You: We flash the module with your specific VIN, ensuring it communicates perfectly with your vehicle’s other systems right out of the box.
- ✔ Latest GM Software: Your PCM will be loaded with the most recent factory software, which often corrects drivability issues and improves efficiency.
- ✔ Direct Replacement: This unit is a direct fit for multiple service numbers including 89017750, 12582605, 12589463, and 12602802.
- ✔ Resolves Common Issues: A direct solution for symptoms like harsh shifting, engine misfires, false sensor codes, and complete network communication failure.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new PCM is a straightforward process you can do in your own driveway. Just follow these simple steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system capacitors to discharge.
- Locate the PCM: On most compatible trucks and SUVs, the PCM is located in the engine bay, on the driver’s side, near the battery or air filter box.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed module in place and securely reconnect the electrical harnesses. You should feel a solid click as they lock.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn (If Necessary): In most cases, the vehicle will start and run perfectly. Some vehicles may require a simple security relearn procedure, which typically involves cycling the key and can be done without any special tools.
After purchase, simply provide us with your VIN, and we’ll take care of the rest. We’ll program the module and ship it directly to you, ready for a simple, cost-effective repair that you can trust.