Is Your GM Truck or Van Running Rough?
If you’re dealing with a frustrating no-start condition, intermittent stalling, a persistent check engine light, or bizarre transmission shifting in your 1999 Chevrolet Suburban 2500, the root cause is often the one component you least suspect: the Powertrain Control Module (PCM). As the central computer for your engine and transmission, when it starts to fail, it can create a cascade of problems that are incredibly difficult to diagnose.
Don’t Get Chased by Ghosts in the Machine
Over my 20+ years turning wrenches and selling parts, I’ve seen countless customers replace perfectly good fuel pumps, sensors, and ignition components, only to have the same issues return. The PCM is the brain, and if it’s giving bad commands, the rest of the system can’t function correctly. These older GM PCMs are notorious for internal component failure over time due to heat, vibration, and age.
Expert Pro Tip: Check Your Grounds First!
Before you condemn your PCM, do yourself a favor and check the main engine and chassis ground connections. On these GMT400 and Express platforms, a corroded or loose ground strap can cause voltage issues that mimic a failing PCM. I’ve seen a 15-minute fix with a wire brush save a customer hundreds of dollars. If your grounds are clean and tight and the problems persist, the PCM is your most likely culprit.
The Direct-Fit, Programmed Solution
This isn’t just a replacement part; it’s a complete solution. We take a quality-tested Powertrain Control Module and professionally program it to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates flawlessly with your truck’s specific options, engine, and transmission from the moment you install it. No trips to the dealer for expensive programming are required.
Key Benefits of This VIN-Programmed PCM:
- โ Eliminates Guesswork: Solves common issues like stalling, harsh shifting, no-start conditions, and false sensor codes.
- โ Plug & Play Installation: Once we program the module with your VIN, it arrives ready to be installed. In most cases, it’s a simple bolt-in process.
- โ Latest GM Software: We flash the module with the newest available calibrations from General Motors, which often include drivability and performance improvements over the original software.
- โ Cost-Effective Repair: Avoids the high cost of a new module and programming labor at a dealership.
How The Process Works
Ordering is simple. After you complete your purchase, just send us your 17-digit VIN. Our technicians will handle the programming, and we’ll ship the module directly to you, ready for installation. It’s the most straightforward way to restore your vehicle’s reliability.
Guaranteed Compatibility
This module is a direct replacement for several part numbers, ensuring a perfect fit and function for a wide range of GM vehicles. Please verify your original part number or use the compatibility list below.
- โ Replaces Part Numbers: 16263494, 16265035, 8162634940, 218-11787, 21811787
- โ Fits Many Models: Including Chevrolet & GMC Pickups (1500, 2500, 3500), Suburban, Tahoe, Yukon, Express & Savana Vans, S10/Sonoma, Blazer/Jimmy, and more from the 1998-2002 era. Please check the detailed fitment list to confirm your specific application.
Don’t let a faulty computer keep your reliable GM truck off the road. Get the correctly programmed heart of your engine’s management system and drive with confidence again.