Is Your GM Truck or Van Running Rough, Stalling, or Not Starting?
If you’re dealing with a check engine light that won’t go away, unpredictable stalling, harsh transmission shifting, or a complete no-start condition on your 1999-2000 GMC 3500 or other compatible GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your engine and transmission, when the PCM’s internal components degrade, it can cause a cascade of frustrating and hard-to-diagnose issues. You’re not just buying a part; you’re buying a solution to get your reliable workhorse back on the road.
From the Shop Floor: A Real-World Diagnosis
“A customer’s 2000 Chevy Express 3500 van came in on a tow truck last week with a classic ‘crank-no-start’ condition. The owner had already replaced the fuel pump and crank sensor, but nothing worked. We connected our scanner and couldn’t establish communication with the PCM. After confirming the module had power and ground, we knew the PCM itself was dead. This is a scenario I’ve seen hundreds of times on these late 90s/early 00s GM vehicles. Heat and vibration in the engine bay eventually take their toll on the delicate internal circuits. A replacement, correctly programmed PCM, had their van starting on the first key turn.”
The Guaranteed Solution: A VIN-Programmed PCM
Don’t waste time and money at a dealership. We offer a dependable, direct-fit replacement PCM that arrives at your door ready for installation. The critical difference is our expert programming service. Before we ship your module, we use your vehicle’s unique Vehicle Identification Number (VIN) to load the latest, most stable software updates directly from GM. This ensures perfect compatibility with your specific engine, transmission, and factory options.
Key Benefits of This Programmed PCM:
- โ Eliminates Guesswork: Solves common issues like random stalling, poor fuel economy, erratic shifting, and false sensor codes.
- โ Plug & Play Installation: Arrives pre-programmed to your VIN. In most cases, you simply disconnect the battery, swap the module, and reconnect. No expensive dealer visit required.
- โ Updated GM Software: We flash the module with the newest software, which often corrects drivability and performance bugs present in the original factory programming.
- โ Restored Communication: Fixes no-communication errors with diagnostic scan tools, allowing for proper vehicle diagnostics in the future.
Installation & Fitment Verification
Locating your PCM is straightforward. On most trucks and SUVs like the GMC Sierra, Chevy Silverado, Tahoe, and Yukon, you’ll find it in the engine compartment, typically on the driver’s side. On vans like the Express and Savana, it’s often located in the rear of the engine compartment. The process is as simple as disconnecting the negative battery terminal, carefully unplugging the large electrical connectors, unbolting the old module, and installing the new one in its place.
This module is a direct replacement for the following part numbers:
- โ 16263494
- โ 16265035
- โ 8162634940
- โ 218-11787
- โ 21811787
To ensure 100% compatibility, please verify that your vehicle is on the fitment list and provide us with your VIN upon purchase. This allows us to deliver a perfectly matched and fully updated component, restoring your vehicle’s performance and reliability.