Is Your GM Truck or Van Running Rough?
If you’re dealing with a persistent check engine light, erratic engine behavior, harsh shifting, or a no-start condition in your Chevrolet Blazer, GMC Jimmy, Silverado, or Express van, the root cause is often a failing Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing critical engine and transmission functions. When it begins to fail, it can create a cascade of frustrating and difficult-to-diagnose problems.
This replacement PCM is the definitive solution to restore your vehicle’s performance and reliability. It is a direct-fit component for a wide range of GM trucks and vans from the late 1990s and early 2000s. More importantly, it arrives at your door pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module is perfectly matched to your vehicle’s factory options, engine, and transmission, eliminating compatibility issues and ensuring a seamless installation.
I once had a 1999 Chevy Silverado in the shop with what seemed like a clear-cut transmission problem. The customer complained of harsh shifting and the scanner pulled a P0753 code for a shift solenoid electrical fault. The previous mechanic had already replaced the solenoid, but the problem remained. Instead of just throwing another part at it, I started tracing wires. I found a corroded ground wire near the PCM mounting bracket. After cleaning and securing the ground, the code persisted. The intermittent ground connection had caused voltage spikes that damaged the driver circuit inside the original PCM. Installing a properly programmed replacement module, like this one, finally resolved the shifting issue and cleared the code for good. It’s a powerful reminder that while external wiring is crucial, the PCM itself can be the final point of failure.
Why Choose Our 16263494 Powertrain Module?
Don’t settle for a generic, unprogrammed module that will require expensive dealer intervention. Our process is simple and effective. After your purchase, you provide us with your vehicle’s VIN. Our technicians then use that information to flash the module with the latest, most stable software updates directly from GM. This not only restores original functionality but can also correct factory-known drivability issues, improving your vehicle’s overall performance and efficiency.
Common Symptoms of a Failing GM PCM
- ✔ Persistent Check Engine Light (CEL) with various or communication-related trouble codes.
- ✔ Engine cranks but will not start.
- ✔ Unexplained stalling or hesitation during acceleration.
- ✔ Harsh, erratic, or delayed automatic transmission shifting.
- ✔ A significant and sudden drop in fuel economy.
- ✔ The vehicle fails to pass an emissions test.
- ✔ Intermittent electrical issues that seem to have no other cause.
Replacing your faulty computer with our pre-programmed 16263494 Powertrain Module is the most reliable and cost-effective way to solve these problems. Installation is a straightforward process for any competent DIYer or professional mechanic. Once installed, you will need to perform a simple security relearn procedure (often called VATS or Passlock), which pairs the new module to your vehicle’s anti-theft system. This procedure typically requires no special tools and can be completed in about 30 minutes by following a sequence of key turns.
Frequently Asked Questions
What is VIN programming?
VIN programming is the process of loading your vehicle’s specific software and calibration files onto the module. This ensures the PCM works correctly with your engine, transmission, and all factory-installed options. We handle this for you before shipping.
Is this part difficult to install?
The physical installation is typically simple, involving unplugging the old module and plugging in the new one. The only additional step is a security relearn procedure, which can be done without special tools and instructions are widely available online for your specific model.
Do I need to send my old PCM back?
No core charge or return is required. You can keep or dispose of your old module.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty PCM, this replacement will resolve the issue. It’s crucial to ensure your vehicle’s underlying mechanical or electrical issues have been addressed first.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot program and ship your module without it. You can find your VIN on your vehicle’s dashboard (viewable through the windshield) or on the driver’s side door jamb sticker.