Is Your GM Truck or Van Running Rough?
If your GMC Safari, Chevy Express, or S10 is suffering from baffling electrical issues, poor engine performance, or a frustrating no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. This critical component is the ‘brain’ of your vehicle, and when it fails, it can leave you stranded and stressed. Get back on the road with confidence with this direct-replacement, fully programmed Engine Control Module, the definitive solution to your vehicle’s problems.
Common Symptoms & Your Solution
A faulty PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, this module is your solution:
- Persistent Check Engine Light (CEL) with codes like P0601, P0602, or P0605
- Unexplained stalling or rough idling
- Poor fuel economy
- Harsh or erratic transmission shifting
- Engine misfires or hesitation
- Complete no-start condition where the engine cranks but won’t fire
This isn’t just a replacement part; it’s a complete, hassle-free fix. We address the core problem by providing a dependable module programmed with the latest GM software updates specifically for your vehicle’s VIN. This eliminates guesswork and the need for expensive dealership visits, ensuring your engine and transmission operate exactly as they were designed to. When you need a reliable fix, our GM 16263494 PCM is the answer.
Features & Benefits
- ✔ VIN-Programmed for You: We flash the module with your vehicle’s specific VIN, ensuring 100% compatibility and eliminating the need for expensive dealership programming.
- ✔ Plug & Play Installation: Simply install the module and you’re ready to go. No complicated relearn procedures are required for most vehicles, getting you back to work faster.
- ✔ Updated GM Software: Your module arrives with the newest factory software, which can resolve common drivability issues and improve engine efficiency.
- ✔ Restored Performance & Economy: A properly functioning PCM is critical for optimal engine timing, fuel delivery, and transmission shifting, bringing back the power and fuel mileage you’ve been missing.
- ✔ Direct Fit & Function: This module is a direct replacement for OEM part numbers like 16263494, 16265035, and 21811787, guaranteeing a perfect fit and seamless integration.
Expert Technician’s Insight: As a technician with over 20 years on the floor, I’ve seen countless hours and dollars wasted chasing symptoms caused by a bad PCM. Drivers replace sensors, spark plugs, and fuel pumps, only to find the root issue was the vehicle’s brain. The most common failure point on these older GM modules is internal memory corruption (often triggering a P0601 code) or driver circuit failure for injectors or ignition coils. Our process of programming with the latest software and verifying communication ensures you’re getting a solid unit that solves the problem the first time.
Frequently Asked Questions
Do I need to send my old module (core) back?
No core charge or return is required for this module. You can keep or dispose of your old part at your convenience.
Is any additional programming needed after installation?
No. This GM 16263494 PCM is pre-programmed to your VIN for a plug-and-play installation. In some cases, your vehicle may require a security relearn procedure (also known as a CASE relearn), which is a simple process you can typically do yourself in about 15 minutes with just the ignition key.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We must have your VIN to program the module before we can ship it.
What is the difference between a PCM, ECM, and ECU?
These terms are often used interchangeably. ECM (Engine Control Module) typically controls only the engine. A PCM (Powertrain Control Module) controls both the engine and the transmission. For these GM vehicles, this unit functions as the PCM.
Will this fix my specific Check Engine Light code?
This module is the correct fix for internal processor fault codes (like P0601, P0602, P0606) and communication errors. While it can resolve many other issues related to sensor inputs and component outputs, it’s crucial to properly diagnose your vehicle to ensure the PCM is the true cause of the problem before ordering.
Is this compatible with my vehicle?
This module fits a wide range of GM trucks and vans from approximately 1998-2002. Please check the detailed fitment list on this page and ensure your original part number matches one of the numbers listed, such as 16263494. Providing your VIN is the final step to guarantee a perfect match.