Is Your Truck or Van Suddenly Unreliable?
There’s nothing more frustrating than a vehicle you depend on letting you down. If your Chevrolet Express, Silverado, or GMC Sierra is experiencing baffling issues like stalling, hard starting, erratic shifting, or a persistent Check Engine Light, the problem often points directly to a failing Powertrain Control Module (PCM). Don’t let a faulty computer sideline your workhorse. This is the straightforward, dependable solution to get you back on the road and back to business.
Common Symptoms & Your Solution
A failing PCM can cause a cascade of problems that can be difficult to diagnose. If you’re seeing any of these signs, this module is your definitive fix:
- Persistent Check Engine Light (CEL) with communication-related codes (like P0601, P0605).
- Engine stalling or cutting out unexpectedly.
- Harsh or unpredictable automatic transmission shifting.
- A complete no-start condition where the engine cranks but won’t fire up.
- Poor fuel economy and a noticeable loss of power.
This isn’t just a replacement part; it’s a complete solution. We take the guesswork out of the repair by programming this module with the latest official GM software, tailored specifically to your vehicle’s VIN. This ensures perfect communication between your engine, transmission, and all related systems. For anyone needing a reliable 1999-2002 Express 2500 PCM or a compatible unit for their GM truck, this is the most efficient path to a lasting repair.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: Arrives at your door ready for installation. No expensive trips to the dealership for programming are necessary. Just provide your VIN at checkout, and we handle the rest.
- โ Loaded with Latest GM Software: We flash the module with the most current updates from General Motors, often correcting factory bugs and improving performance and fuel efficiency.
- โ Restores Peak Engine Performance: A properly functioning PCM is the key to a smooth, responsive, and efficient engine. Restore the power and reliability you depend on.
- โ Direct-Fit Guaranteed: This module is a direct replacement for a wide range of original part numbers, including 16263494 and 16265035, ensuring a perfect fit and function for the extensive list of compatible vehicles.
- โ Solves Frustrating Electrical Gremlins: Stop chasing phantom sensor codes and unpredictable behavior. A fresh, correctly programmed 1999-2002 Express 2500 PCM restores stable communication across your vehicle’s network.
From the Technician’s Bench: I’ve seen countless work vans and trucks from this era come into the shop with issues that stump even experienced mechanics. More often than not, after hours of chasing wires and replacing sensors, the root cause is the original PCM finally giving up. Heat cycles and age take their toll on the internal circuit board. The biggest mistake people make is buying a used module from a junkyard, not realizing it won’t work without being programmed. This VIN-programmed unit saves you that headache and the high cost of dealer labor, making it the smartest, fastest fix.
Your vehicle is an essential tool. Whether you use it for your business or for your family, you need it to be dependable. Installing this pre-programmed 1999-2002 Express 2500 PCM is the most confident step you can take to restore its performance and your peace of mind.
Frequently Asked Questions
Do I need to do anything after I install the module?
In most cases, you will need to perform a security relearn procedure, also known as a CASE relearn. This is a simple process that can be done without special tools and typically involves a sequence of turning the key on and off. We include instructions to guide you through it.
How do I provide you with my vehicle’s VIN?
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 correctly before we can ship it.
Is this a new or a used part?
This is a high-quality, professionally inspected and tested electronic control module. Each unit undergoes a rigorous process to ensure it meets or exceeds original factory specifications for performance and longevity.
Will this fix my transmission shifting problems?
The PCM controls both engine and transmission functions. If your shifting problems are caused by faulty electronic commands from a failing module, then yes, this part is very likely to solve the issue. It restores the correct communication needed for smooth shifting.
How long does the programming and shipping process take?
Programming is typically completed within one business day after we receive your VIN. From there, shipping times will depend on the method you select at checkout. We work quickly to minimize your vehicle’s downtime.
What if my original part number isn’t on your list?
Our compatibility list is extensive, but if you don’t see your specific part number, please contact us with your VIN and original part number. We can verify compatibility and ensure you get the correct module for your vehicle.