Restore Peak Performance to Your 1997 GM Vehicle
Is your 1997 Chevrolet Express, GMC Savana, Tahoe, or S10 suffering from perplexing issues like stalling, rough idling, poor fuel economy, or a persistent Check Engine Light? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. The PCM is responsible for managing critical engine and transmission functions, from fuel injection and ignition timing to emission controls and shift points. When it begins to fail, it can cause a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs.
This replacement PCM, part number 16229684, is the definitive solution to get your truck or van running reliably again. We take the guesswork out of the repair process. Each module is meticulously tested and then programmed with the latest GM-certified software specific to your vehicle’s Vehicle Identification Number (VIN). This ensures perfect communication between all vehicle systems and restores the original factory performance and efficiency standards. Don’t let a faulty computer keep your dependable GM vehicle off the road. This is a direct-fit, plug-and-play solution designed for a straightforward installation.
From the Diagnostic Bay
We had a 1997 GMC Yukon come into the shop that was driving the owner crazy. It had a random, intermittent no-start condition and would occasionally stall at red lights. He had already replaced the fuel pump, ignition coil, and crank sensor based on advice from various forums, but the problem persisted. After hooking up our professional scan tool, we noticed erratic data streams from the PCM and communication dropouts. We suspected the main computer. Instead of chasing more phantom issues, we installed a VIN-programmed 1997 GM Truck PCM. The Yukon fired up instantly. We took it on an extended test drive, and all the previous issues were gone. It’s a classic case where treating the root cause—the failing computer—saved the customer from replacing more perfectly good parts.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Complete no-start or intermittent starting problems.
- ✔ Poor fuel mileage and reduced engine power.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
- ✔ Communication errors with diagnostic scan tools.
Why Our Programmed 1997 GM Truck PCM is the Right Choice
Finding a reliable electronic control module for a classic vehicle like a ’97 GM can be a challenge. Our process is designed for your peace of mind. When you order, you provide us with your vehicle’s VIN. Our technicians then use this information to load the precise, factory-correct software onto the module. This isn’t a one-size-fits-all solution; it’s a component prepared specifically for your truck’s engine, transmission, and options package. This critical step ensures that once installed, the module functions exactly as the original did when your vehicle was new. It corrects software-related issues and ensures all components operate in harmony, restoring lost performance and reliability.
Installation is typically straightforward. In most of these 1997 models, the PCM is located in the engine bay, often on the driver’s side fender or near the battery. After disconnecting the battery, you can unbolt the old module, disconnect the wiring harnesses, and install the new one in its place. Once the battery is reconnected, you may need to perform a simple security relearn procedure (often called a CASE relearn or anti-theft relearn), which can usually be done without special tools. Instructions for this procedure are widely available and simple to follow. This plug-and-play convenience gets you back on the road faster, without the need for an expensive trip to the dealership for programming.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during or after checkout, and we will flash the module with the correct GM software for your specific vehicle. It will arrive ready to install.
What is a VIN and where do I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can find it on your vehicle’s registration, insurance card, or on a small plate on the driver’s side of the dashboard, visible through the windshield.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very manageable job. It typically involves disconnecting the battery, unplugging a few electrical connectors, and removing a few bolts. The most important part is ensuring the battery is disconnected to prevent electrical damage.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM also controls the electronic functions of the automatic transmission. If your shifting issues are caused by faulty signals or a failing computer, this replacement 1997 GM Truck PCM will resolve them.
What if my original part number is slightly different?
This module, 16229684, is a direct replacement for several part numbers, including 8162296840. As long as your vehicle is listed in our compatibility chart, this module will work perfectly once programmed to your VIN.