Is Your 1999-2000 GM Truck or SUV Acting Possessed?
If you’re dealing with a no-start condition that comes and goes, erratic transmission shifting, a persistent check engine light, or stalling for no reason, the problem is very likely the heart of your vehicle’s electronics: the Powertrain Control Module (PCM). After two decades on the road, the original PCMs in these otherwise bulletproof GM trucks and SUVs are a common failure point. I’ve personally diagnosed hundreds of these, and the symptoms are almost always the same.
A Technician’s Real-World Story
A customer’s 2000 Yukon came into my shop last month with a classic complaint: it would run perfectly for days, then suddenly die at a stoplight and refuse to start. After letting it sit for an hour, it would fire right back up as if nothing happened. He had already replaced the fuel pump and crank sensor. After connecting my scan tool, I noticed it kept losing communication with the PCM when the engine was hot. This is a tell-tale sign. The internal circuit board develops microscopic cracks in the solder joints from years of heat cycles, causing an open circuit when the module gets warm. Swapping in a quality replacement PCM solved his issue for good.
The Direct Solution: A VIN-Programmed PCM
Don’t waste time and money chasing phantom issues. This Powertrain Control Module is the definitive solution for a failing computer in your GM vehicle. It’s not just a replacement part; it’s a fully prepared component, ready for installation right out of the box. We take the guesswork and extra expense out of the repair by programming the module specifically for your vehicle using your VIN.
- โ Eliminate Costly Dealer Visits: This module arrives pre-programmed with the latest GM software updates. This means you don’t need to have the vehicle towed to a dealership for expensive programming.
- โ Solve Common Drivability Problems: A failing PCM is the root cause of many frustrating issues. This replacement will restore proper function and communication between your engine and transmission.
- โ Plug-and-Play Installation: Once you receive the module, the physical installation is straightforward. Simply disconnect the battery, unbolt the old PCM, and connect this new one.
- โ Guaranteed Compatibility: By providing your VIN, you ensure this module is a perfect match for your vehicle’s specific configuration, including engine, transmission, and emissions equipment.
Confirming Your Part Number
To ensure a perfect match, please verify that your original module has one of the following part numbers printed on its label. This unit is a direct replacement for:
- โ 16263494
- โ 16265035
- โ 8162634940
- โ 218-11787
- โ 21811787
Important Post-Installation Note
For many of these GM vehicles, a security relearn procedure (often called a CASE or Crankshaft Variation Relearn) may be required after installation. This is a simple procedure that can often be done without special tools and is necessary to sync the new PCM with your vehicle’s anti-theft and engine systems. This ensures smooth operation and prevents a no-start condition after the swap. Instructions are readily available online for your specific model.