Restore Peak Performance to Your GM Truck or SUV
Is your truck suffering from a persistent Check Engine Light, erratic shifting, poor fuel economy, or a frustrating no-start condition? These are common signs of a failing Powertrain Control Module (PCM), the central computer that manages your vehicle’s engine and transmission. This replacement PCM, part number 28042802, is the definitive solution to restore your vehicle’s factory performance, reliability, and efficiency. It serves as a direct replacement for a wide range of GM trucks and SUVs from 2003 to 2007, including the workhorse Silverado, Sierra, and versatile Tahoe and Yukon models.
From the Diagnostic Bay
We once had a 2005 Sierra 2500 in the shop with a laundry list of confusing symptoms. The owner had already replaced the MAF sensor, multiple O2 sensors, and even the throttle body chasing intermittent stalling and a P0606 (PCM Processor Fault) code. The truck would run fine for a day, then fall flat. After verifying all sensor inputs and wiring, we pinpointed the issue: an internal failure in the original PCM. Installing a VIN-programmed module like this one solved every single issue instantly. The truck ran smoother than it had in years, proving that starting with the ‘brain’ is often the right call for complex electronic issues.
Diagnosing a Faulty Silverado 3500 PCM
A failing Silverado 3500 PCM can manifest in ways that often mimic other component failures, leading to frustrating and expensive misdiagnoses. The internal circuit boards and processors can degrade over time due to heat, vibration, and electrical stress. When this happens, the PCM can no longer accurately interpret sensor data or send the correct commands to the engine and transmission. This results in a cascade of performance problems that can leave you stranded. Replacing your module with a correctly programmed unit is the most effective way to resolve these deep-seated electronic issues and ensure all vehicle systems are communicating correctly.
Common Symptoms of PCM Failure
- ✔ Persistent Check Engine Light (CEL) with various trouble codes
- ✔ Engine stalling, stumbling, or hesitating during acceleration
- ✔ Rough or erratic idling
- ✔ Harsh or incorrect automatic transmission shifting
- ✔ A noticeable decrease in fuel efficiency
- ✔ Complete no-start or no-crank condition
- ✔ Communication errors with diagnostic scan tools
- ✔ Failure to pass emissions testing
This module is a direct replacement for multiple service numbers, including 89017750, 12582605, 12589463, 12602802, and 89017734. To ensure a perfect, hassle-free installation, we flash the module with the latest official GM software updates specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after your purchase, and we handle the rest. Your new PCM will arrive ready to install, with no additional dealer programming required.
Frequently Asked Questions
Why do you need my VIN to program the PCM?
Your vehicle’s VIN is essential because it allows us to load the exact software calibration file from GM for your truck’s specific engine, transmission, emissions equipment, and other options. This ensures perfect compatibility and function right out of the box.
Is this a simple plug-and-play installation?
Yes, this module is designed to be plug-and-play. Once we program it with your VIN, you simply disconnect the battery, swap the old module with the new one, and reconnect the battery. In most cases, no further action is needed.
Will I need to perform a security relearn procedure?
For many GM vehicles of this era, a simple security relearn procedure may be necessary after installation. This procedure can be done without any special tools and typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the new PCM to sync with your vehicle’s anti-theft system.
How do I know if this PCM will fit my vehicle?
Please review the detailed fitment list on this page. This PCM is compatible with a wide range of GM models from 2003-2007. The most important step is to match your original part’s service number to one of the compatible numbers listed: 89017750, 12582605, 12589463, 12602802, 89017734, or 28042802.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty PCM, then yes, this replacement will resolve the issue. However, it’s crucial to properly diagnose the problem first, as the light could be on for other reasons, such as a bad sensor or wiring issue.