Restore Peak Performance to Your GM Truck or SUV
Is your Chevrolet Silverado, GMC Sierra, Cadillac Escalade, or Hummer H2 suffering from perplexing issues like a persistent check engine light, erratic shifting, poor fuel economy, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your vehicle’s engine and transmission. Don’t let a faulty computer keep your reliable truck off the road. This direct-fit GM PCM 89017734 is the definitive solution to restore your vehicle’s factory performance, drivability, and reliability.
The PCM is the brain of your vehicle’s operation, constantly analyzing data from dozens of sensors to control fuel injection, ignition timing, transmission shift points, and emissions systems. When it begins to fail, it can cause a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs of other components. By replacing your old module with this professionally prepared unit, you are addressing the root cause of these frustrating electronic issues.
I once had a 2005 Silverado 2500 in the shop with a complaint of harsh, delayed shifting and a check engine light. The owner had already spent a small fortune replacing the transmission solenoids and the valve body based on another shop’s recommendation, but the problem persisted. After hooking up my scan tool, I noticed erratic data PIDs from the engine sensors and communication errors with the transmission module. Instead of diving back into the transmission, I focused on the PCM. A quick inspection revealed slight corrosion on one of the connectors. We installed a pre-programmed PCM, performed the security relearn, and the truck drove like it just rolled off the assembly line. It’s a classic case where the central computer was the real culprit, making other components appear faulty.
Symptoms of a Failing GM Powertrain Control Module
A failing PCM can manifest in various ways. If you’re experiencing any of the following, your module is the likely suspect:
- ✔ Persistent Check Engine Light (CEL) illumination.
- ✔ Stalling, rough idling, or engine misfires.
- ✔ Harsh, delayed, or incorrect automatic transmission shifting.
- ✔ A complete no-start or intermittent starting condition where the engine cranks but won’t fire.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Communication error codes (U-codes) stored in the system.
- ✔ Failure to pass state emissions testing.
Why Choose Our Programmed GM PCM 89017734?
This isn’t just a part in a box. We provide a comprehensive solution designed to get you back on the road quickly and affordably. When you order, we flash the module with the latest, most up-to-date GM-certified software calibration specifically for your vehicle. This is done using the unique Vehicle Identification Number (VIN) you provide, ensuring perfect compatibility and communication with all other modules on your truck. This critical programming step eliminates the need for an expensive trip to the dealership for software installation. Your new GM PCM 89017734 arrives ready for installation, simplifying the repair process and saving you hundreds of dollars in labor and programming fees.
This module is a direct replacement for multiple service numbers, including 89017750, 12582605, 12589463, 12602802, and 28042802. Please verify your part number and consult the detailed fitment list to ensure this is the correct component for your vehicle. Take control of your repair and restore your vehicle’s performance with a reliable, correctly programmed engine computer.
Frequently Asked Questions
Is this PCM difficult to install?
No, the physical installation is straightforward for most DIY mechanics. On the majority of compatible GM trucks and SUVs, the PCM is located in the engine bay on the driver’s side, next to the battery. It involves disconnecting the battery, unplugging the three main electrical connectors, and unbolting the module. After installation, a security relearn procedure is required, which can typically be done without special tools.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. You can typically add this as a note during checkout or send it to us in a message referencing your order number. We cannot ship the module until we have your VIN to load the correct software.
What is a security or CASE relearn procedure?
After installing the new PCM, your vehicle’s anti-theft system (Passlock/VATS) needs to synchronize with the new module. This ‘security relearn’ is a simple procedure that usually involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. A Crankshaft Variation (CASE) relearn may also be needed to prevent a P1336 trouble code, which requires a capable bi-directional scan tool.
Will this fix my specific problem?
If your vehicle’s issues match the common symptoms of PCM failure and a qualified mechanic has diagnosed the PCM as the faulty component, then this part is the correct solution. It is designed to resolve issues directly caused by a malfunctioning original engine computer.
Is this a new or used part?
This is a high-quality, inspected, and tested replacement part that is guaranteed to function to OEM specifications. Each unit is thoroughly vetted before being programmed with your vehicle’s specific software.