Restore Your Truck’s Reliability and Performance
Is your trusty GM truck or van running rough, shifting erratically, or constantly triggering the Check Engine Light? A failing Powertrain Control Module (PCM) is often the root cause of these frustrating issues, leaving you with an unreliable vehicle. This replacement PCM is the definitive solution to get your workhorse back on the road. It arrives fully programmed to your vehicle’s specific VIN with the latest GM software updates, eliminating the need for an expensive trip to the dealership. This isn’t just a replacement part; it’s a restoration of your vehicle’s core performance and dependability.
Common Symptoms of a Failing PCM & Your Direct Solution
If you’re experiencing any of the following, a faulty PCM is the likely culprit. This module is engineered to solve these problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0605
- Rough or unstable engine idle
- Noticeable decrease in fuel economy
- Harsh, delayed, or incorrect transmission shifting
- Engine stalling or difficulty starting
- Failure to pass emissions testing
Installing our pre-programmed 1999-2000 Chevrolet 2500 PCM directly addresses these issues by restoring the critical communication link between your engine, transmission, and other vital systems.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: Arrives ready for installation, no need for additional programming or dealer visits. Just provide your VIN at checkout.
- ✔ Loaded with Latest GM Updates: We flash the module with the most current factory software, often improving on the original’s performance and efficiency.
- ✔ Plug & Drive Installation: Designed as a direct-fit replacement for the original unit, ensuring a straightforward installation process.
- ✔ Restores Peak Engine Performance: Corrects air/fuel mixture, ignition timing, and idle control for a smooth, powerful engine response.
- ✔ Fixes Poor Shifting: Restores precise electronic control over your transmission’s shift points, eliminating harshness and hesitation.
- ✔ Cost-Effective Solution: Get a fully functional, programmed module for a fraction of the cost of a new unit from a dealer.
An Expert’s Perspective: Why VIN Programming is Non-Negotiable
As a technician for over 20 years, I’ve seen countless vehicles with persistent issues simply because a replacement module wasn’t programmed correctly. A generic, un-flashed unit can cause more problems than it solves, from transmission damage to no-start conditions. That’s why we take the critical step to flash this 1999-2000 Chevrolet 2500 PCM specifically to your vehicle’s VIN. This ensures all factory parameters for your engine, transmission, and security systems are perfectly aligned. It’s the only way to guarantee a seamless, correct, and lasting repair.
Frequently Asked Questions
Do I need to do any programming after I receive it?
No. We program the module to the VIN you provide before shipping. However, for vehicles equipped with a Passlock or VATS security system, you will need to perform a simple security relearn procedure after installation. This procedure takes about 30 minutes and does not require any special tools.
How do I provide my VIN?
After you complete your purchase, you can send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for programming.
Where is the PCM located on my vehicle?
The location varies slightly by model. On most GMT400 and GMT800 trucks and SUVs (like the Silverado, Sierra, Tahoe), it’s located in the engine compartment on the driver’s side, often near or under the battery tray. On Express and Savana vans, it is typically in the LH rear of the engine compartment.
Is this a guaranteed fit for my truck or van?
Yes. As long as your vehicle is listed in the compatibility chart and you provide the correct VIN, we guarantee it will be the correct, programmed part for your application. This 1999-2000 Chevrolet 2500 PCM is a direct replacement for service number 16263494.
What if my original part number is slightly different?
This module is compatible with several part numbers, including 16263494, 16265035, and 8162634940. The crucial step is programming it to your VIN, which makes it compatible with your specific vehicle’s systems, even if the number on your old case differs.