Restore Peak Performance to Your 1997 GM Vehicle
Is your 1997 Chevrolet Express 1500, GMC Savana, or S10 Blazer running rough, stalling, or refusing to start? The Powertrain Control Module (PCM), often called the vehicle’s main computer, is the central command for all critical engine and transmission functions. When it begins to fail, it can cause a host of confusing and frustrating issues, from poor fuel economy to a complete no-start condition. This replacement PCM, part number 16229684, is the definitive solution to restore your vehicle’s reliability and drivability.
Unlike a generic part from a local store, this module is a complete, ready-to-install solution. We take the guesswork out of the repair by programming the unit specifically for your vehicle using your VIN. This process installs the latest factory software updates from GM, ensuring the PCM communicates flawlessly with all other modules in your truck or van. This eliminates the need for an expensive trip to a dealership for programming, saving you both time and money.
From the Diagnostic Bay
We had a 1997 GMC Yukon come into the shop that had its owner completely stumped. It had an intermittent stalling issue that no one could pinpoint. The owner had already replaced the fuel pump, ignition coil, and crank sensor. After connecting our diagnostic scanner, we noticed erratic data readings from the PCM and a few communication error codes. We suspected an internal fault in the original module. After installing one of our VIN-programmed PCMs, the Yukon fired right up and ran perfectly. The intermittent stall was gone for good. It’s a powerful reminder that the PCM is the true brain of the operation, and when it’s not healthy, the entire vehicle suffers.
Diagnosing a Failing 1997 Express 1500 PCM
A failing Powertrain Control Module can manifest in various ways, often mimicking other component failures. If you’ve been chasing ghosts in your electrical or fuel system without success, it’s time to consider the PCM. This programmed 1997 Express 1500 PCM is engineered to resolve these complex issues and get you back on the road with confidence.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is on with communication-related trouble codes (e.g., U-codes).
- ✔ Engine cranks but will not start.
- ✔ Intermittent stalling or engine stumbling while driving.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Misfires or a rough idle even after replacing spark plugs and wires.
- ✔ Apparent loss of spark or fuel injector pulse.
Wide-Ranging Compatibility
This module is a direct replacement for part numbers 16229684 and 8162296840 and fits a vast array of 1997 GM and Chevrolet trucks and vans. Please verify your vehicle is on the list below to ensure proper fitment:
- Astro & Safari
- Blazer S10/Jimmy S15 (4.3L)
- Bravada (4.3L)
- Chevrolet & GMC 1500/2500/3500 Pickups (Gasoline)
- Express & Savana 1500/2500/3500 Vans (Gasoline)
- Isuzu Hombre (4.3L)
- S10/S15/Sonoma (4.3L)
- Suburban 1500/2500 (Gasoline)
- Tahoe & Yukon (Gasoline)
Ordering is simple. After purchase, provide us with your vehicle’s 17-digit VIN. Our technicians will then flash the module with the correct software for your specific build. The result is a true plug-and-play component that restores the precise control your engine needs to operate as designed. Don’t let a faulty computer keep your reliable GM truck off the road. This is the straightforward, professional-grade fix you’ve been looking for.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s VIN during or after checkout, and the module will arrive ready for installation. This saves you hundreds of dollars in dealership programming fees.
Where is the PCM located on my 1997 GM truck or van?
On most 1997 GM trucks and full-size vans like the Express, Savana, and Silverado, the PCM is located in the engine compartment on the driver’s side, often near the battery or on the inner fender.
Is this a difficult part to install?
Installation is straightforward for someone with basic mechanical skills. It involves disconnecting the vehicle’s battery, unplugging the electrical connectors from the old PCM, unbolting it, and then reversing the process with the new one. No special tools are typically required.
How do I find and provide my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
What if the part number on my old module is slightly different?
This module is a direct replacement for OEM part numbers 16229684 and 8162296840. As long as your vehicle is a 1997 model listed in our compatibility chart, this programmed unit will function correctly, even if your original part number varies.