Is Your GM Truck or Van Running Rough?
If you’re dealing with frustrating issues like a persistent check engine light, poor fuel mileage, erratic shifting, or even a no-start condition, the problem may lie with a faulty Powertrain Control Module (PCM). As the central computer for your engine and transmission, a failing PCM can cause a wide range of problems that are often misdiagnosed. This replacement PCM is the reliable, straightforward solution to get your Chevrolet, GMC, or Isuzu truck back on the road and running like it should.
From the Diagnostic Bay
I remember a 1999 Silverado 4.3L that came in with a complaint of a harsh 1-2 shift and intermittent stalling at red lights. The customer had already replaced the throttle position sensor and cleaned the throttle body with no luck. After hooking up the scanner, I noticed erratic data coming from several sensors, but none were consistently faulty. Experience pointed me towards the computer. We installed a VIN-programmed 16263494 PCM Module, performed the security relearn, and the truck ran perfectly. It’s a classic case where the “brain” was the issue, not the sensors it was reading. This part saved the customer from chasing phantom problems and spending hundreds more on unnecessary parts.
Is Your Vehicle Showing These Symptoms?
- ✔ Persistent Check Engine Light (CEL) that won’t go away.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or delayed automatic transmission shifts.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Failure to communicate with diagnostic scan tools.
- ✔ Inaccurate or non-functioning dashboard gauges.
Why Choose Our Pre-Programmed 16263494 PCM Module?
This isn’t just a replacement part; it’s a complete solution. The biggest hurdle in replacing a modern vehicle computer is the need for expensive, dealer-specific programming. We eliminate that step entirely. When you order, you provide us with your vehicle’s Vehicle Identification Number (VIN). Our technicians will then program the module with the latest, most up-to-date software directly from GM for your specific vehicle. This ensures perfect compatibility and optimal performance right out of the box. It’s a true plug-and-play solution designed to make your repair as simple as possible.
This module is a direct-fit replacement for multiple original equipment part numbers, including 16263494 and 16265035, guaranteeing a perfect physical fit in the factory location. It’s engineered to meet or exceed original specifications for reliability and longevity, restoring the precise fuel delivery, ignition timing, and transmission control your vehicle had when it was new.
Frequently Asked Questions
Do I need to have this module programmed?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s VIN during or after checkout, and it will arrive ready to install.
What is a security or CASE relearn procedure?
After installation, your vehicle may require a security relearn (also known as a Passlock or anti-theft relearn) to allow the engine to start. Additionally, a Crankshaft Variation Relearn (CASE) may be needed to prevent a P1336 trouble code. These procedures are straightforward and can often be done without special tools. Instructions are widely available online for your specific model.
Where can I find my vehicle’s VIN?
Your 17-digit VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a direct replacement for my original part?
Yes, this is a direct-fit replacement for vehicles originally equipped with part numbers 16263494, 16265035, 8162634940, and 218-11787. Please verify the part number on your original module to ensure compatibility.
What happens if I forget to provide my VIN?
We cannot ship the module without your VIN, as the programming is essential for it to function in your vehicle. Our customer service team will contact you to retrieve the VIN if it is not provided with your order.