Is Your ’97 GM Truck or Van Suddenly Unreliable?
After 20+ years behind the wrench, I’ve seen it all, but few things are as frustrating for a driver as an engine computer that’s starting to fail. For these classic 1997 GM vehicles, the Powertrain Control Module (PCM) is the brain of the entire operation. When it goes, your dependable truck can start showing some very confusing symptoms. Maybe it started with a random stall at a stoplight, or it’s been getting harder and harder to start in the morning. These aren’t just signs of age; they’re often tell-tale signs of a failing PCM.
Common Symptoms of a Failing 1997 GM PCM
If your Chevrolet, GMC, or Isuzu is experiencing any of the following, the PCM is a primary suspect. In my shop, I’ve diagnosed hundreds of these specific modules, and the symptoms are remarkably consistent:
- โ Unexplained stalling or cutting out while driving.
- โ Harsh or erratic automatic transmission shifting.
- โ A persistent Check Engine Light that won’t clear, or random codes appearing.
- โ Complete no-start condition where the engine cranks but won’t fire up.
- โ Noticeable decrease in fuel economy.
- โ Failure to communicate with a standard OBD-II scan tool.
Expert Pro Tip: Check Your Grounds First!
Before you condemn your PCM, take 15 minutes to check and clean the main battery connections and the engine/chassis ground straps. On these ’90s GM trucks, a corroded ground can cause voltage drops that mimic PCM failure. I’ve seen customers save hundreds by simply cleaning a $5 ground cable. If your connections are clean and tight and the problems persist, then it’s highly likely the internal components of the PCM have failed from decades of heat and vibration.
The Right Solution: A Pre-Programmed PCM
The old way to fix this was to buy a blank module, have your vehicle towed to a dealership, and pay them a hefty fee to program it. That’s no longer necessary. This PCM is the modern, efficient solution. We take all the guesswork and hassle out of the process.
When you order from us, you’re not just getting a part in a box. You’re getting a fully prepared engine computer that is flashed with the latest official GM software calibration specifically for your vehicle. We use the Vehicle Identification Number (VIN) you provide to ensure the programming perfectly matches your truck’s original factory specificationsโfrom the engine and transmission to the axle ratio and tire size.
Why VIN-Specific Programming is CRITICAL
- โ Guaranteed Compatibility: Your VIN tells us everything needed for a perfect software match, eliminating compatibility errors.
- โ Plug-and-Play Installation: In most cases, this module is ready to be installed right out of the box. No dealership visit required.
- โ Restored Performance: With the correct, updated software, you’ll restore the original drivability, fuel efficiency, and emissions performance of your vehicle.
- โ Security Relearn: Please note that on these vehicles, a simple security relearn procedure (often called a Passlock or VATS relearn) is typically required after installation. This procedure can be done by you in your driveway in about 30 minutes and does not require any special tools. We include instructions to make it easy.
Guaranteed Fitment for Your 1997 GM Vehicle
This module is a direct replacement for part numbers 16229684 and 8162296840. It is guaranteed to fit the following 1997 models:
- โ Chevrolet Pickups (1500, 2500, 3500): Gasoline engines, module in LH front engine compartment.
- โ GMC Pickups (1500, 2500, 3500): Gasoline engines, module in LH front engine compartment.
- โ Chevrolet/GMC Suburban (1500, 2500): Gasoline engines, module in LH front engine compartment.
- โ Chevrolet Tahoe / GMC Yukon: Gasoline engines, module in LH front engine compartment.
- โ Chevrolet Express / GMC Savana Vans (1500, 2500, 3500): Gasoline engines.
- โ Chevrolet S10 / GMC Sonoma: With 4.3L V6 (6-262) engine.
- โ Chevrolet Blazer / GMC Jimmy / Oldsmobile Bravada: With 4.3L V6 (6-262) engine.
- โ Chevrolet Astro / GMC Safari: Module located by LH front battery.
- โ Isuzu Hombre: With 4.3L V6 engine.
Simply purchase the module and provide us with your VIN. We’ll handle the programming and get your truck’s brain back in perfect working order, shipped right to your door.