Is Your GM Truck or Van Driving You Crazy?
If you’re dealing with a 1998-2002 GM vehicle like an S10, Blazer, Silverado, or Express van that’s suddenly developed a mind of its own, you know the frustration. Maybe it’s a hard start or a no-start condition that leaves you stranded. Perhaps it’s bizarre shifting, stalling at stoplights, or a check engine light that keeps pointing to sensors you’ve already replaced. These are classic signs that the brain of your vehicle—the Powertrain Control Module (PCM)—is failing.
Over my 20+ years in the shop, I’ve seen how a faulty PCM can send both owners and technicians on a wild goose chase, wasting time and money on parts that aren’t the root cause. The PCM is the central command for your engine and transmission, and when it starts to go, the symptoms can be all over the map.
A Technician’s Real-World Story
“A customer’s 2000 Chevy Express 2500 work van came in last week with these exact symptoms. The complaint was intermittent stalling and a persistent P0300 random misfire code. The owner, a plumber, had already spent a fortune replacing the spark plugs, wires, distributor cap, and rotor. The van would run fine for a day, then stall repeatedly. Hooking up my professional scan tool, I noticed the fuel trim data and injector pulse width would flatline just before a stall, even though the oxygen sensors and MAF sensor were reading correctly. This told me the problem wasn’t the sensors providing the data, but the computer interpreting it. After confirming solid power and grounds to the PCM, we identified the module itself as the culprit. A new, correctly programmed PCM fixed the issue instantly.”
The Reliable Solution: A PCM Programmed Specifically for You
This isn’t just a replacement part; it’s a complete solution. We are offering a high-quality Powertrain Control Module that fits a wide range of GM vehicles and corresponds to part number 16263494. The most critical service we provide is programming the module before it ships. Using the Vehicle Identification Number (VIN) you provide, we load the latest, most stable GM-certified software for your exact vehicle. This ensures all factory drivability improvements and fixes are included.
- ✔ Eliminates Guesswork: Solves perplexing issues like random stalling, harsh shifting, and false diagnostic trouble codes (DTCs).
- ✔ No Dealer Visit Needed: Arrives ready to install. We handle the complex VIN-specific programming, saving you hundreds in dealership fees and towing costs.
- ✔ Latest GM Software: We flash the module with the newest updates from General Motors, ensuring optimal performance and efficiency.
- ✔ Restores Original Performance: Get your truck or van running the way it was meant to, with smooth idling, proper shifting, and reliable starting.
Is This the Right Part for Your Vehicle?
This PCM is a direct replacement for modules with the service number 16263494 printed on the sticker. It is also a direct replacement for the following interchangeable part numbers:
- ✔ 16265035
- ✔ 8162634940
- ✔ 218-11787
- ✔ 21811787
It fits a massive range of popular GM models from the late 90s and early 2000s, including the S10/Sonoma, Blazer/Jimmy, Astro/Safari, Silverado/Sierra, Tahoe/Yukon, and Express/Savana vans. Please verify the part number on your current module or consult the detailed fitment list to ensure compatibility. After purchase, simply send us your VIN, and we’ll handle the rest, ensuring you get a part that’s truly plug-and-play.
Please Note: While this module is pre-programmed, some vehicles may require a security relearn or Crankshaft Variation (CASE) relearn procedure after installation, which can be performed with a capable bi-directional scan tool. This is a standard procedure for ensuring the PCM communicates correctly with your vehicle’s anti-theft system and crankshaft position sensor.