Restore Peak Performance to Your 1997 GM Truck or Van
Is your trusty 1997 Chevrolet 1500, Tahoe, or Suburban suddenly running rough, stalling, or refusing to start? Before you start throwing expensive parts at it, the problem could be its electronic heart: the Powertrain Control Module (PCM). Over two decades of heat, vibration, and electrical stress can take a toll on these critical components. This replacement 1997 Chevrolet 1500 PCM is the reliable, straightforward solution to get your vehicle running like it should. We take the guesswork and hassle out of the repair by programming the module specifically to your vehicle’s VIN with the latest GM software updates before it even leaves our facility.
From the Diagnostic Bay: The Case of the Intermittent ’97 Yukon
A customer brought in his ’97 GMC Yukon with a frustrating problem. It would run fine for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. He’d replaced the fuel pump and ignition coil, but the issue persisted. There were no hard fault codes, just a history of random communication errors. In my experience, these intermittent, heat-related no-starts on ’90s GM trucks often point back to the PCM. The internal circuit board develops micro-fractures that separate when hot, cutting power to the injectors or ignition system. We installed a VIN-programmed PCM, and the customer called a month later to say his Yukon hadn’t missed a beat since. It’s often the one part that solves a dozen confusing symptoms.
Is Your GM Truck Showing These Signs of PCM Failure?
A failing PCM can cause a wide range of confusing issues. If you’re experiencing any of the following, a replacement module is the most likely solution. Watch for Diagnostic Trouble Codes (DTCs) like P0601 (Internal Memory Error) or P0605 (Read Only Memory Error).
- âś” Engine stalling or cutting out intermittently
- âś” Complete no-start condition (engine cranks but won’t fire)
- âś” Harsh or erratic automatic transmission shifting
- âś” A persistent Check Engine Light that won’t clear
- âś” Noticeable decrease in fuel economy
- âś” Failure to communicate with a diagnostic scan tool
- âś” Misfire codes on multiple cylinders
A Straightforward Guide to Installation
Installing your new PCM is a simple process that most DIY mechanics can complete in under 30 minutes with basic hand tools. No dealership visit is required since the module arrives programmed and ready to go.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical damage.
- Locate the PCM: On most of these trucks and vans, the PCM is located in the engine compartment on the driver’s side, near the fender or battery.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors from the old module. They have locking tabs that need to be released. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the PCM from its mounting bracket and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely tighten the bolts.
- Reconnect Everything: Firmly plug the wiring harnesses into the new module until they click into place. Reconnect the negative battery terminal.
- Final Step: Start the vehicle. It may take a moment to idle smoothly as it completes its initial learning cycle. Your check engine light should be off, and your truck should be running properly.
Verified Compatibility for Your 1997 GM Vehicle
This module, part number 16229684 (also replaces 8162296840), is a direct-fit replacement for a wide range of 1997 gasoline-powered General Motors vehicles. Please confirm your model is on the list below.
BLAZER S10/JIMMY S15 97 (6-262, 4.3L)
BRAVADA 97 (6-262, 4.3L)
CHEVROLET 1500 PICKUP 97 (gasoline, LH front engine compartment)
CHEVROLET 2500 PICKUP 97 (gasoline, LH front engine compartment)
CHEVROLET 3500 PICKUP 97 (gasoline, LH front engine compartment)
EXPRESS 1500 VAN 97
EXPRESS 2500 VAN 97 (gasoline)
EXPRESS 3500 VAN 97 (gasoline)
GMC 1500 PICKUP 97 (gasoline, LH front engine compartment)
GMC 2500 PICKUP 97 (gasoline, LH front engine compartment)
GMC 3500 PICKUP 97 (gasoline, LH front engine compartment)
ISUZU HOMBRE 97 (4.3L, 6 cylinder)
S10/S15/SONOMA 97 (6-262, 4.3L)
SAFARI (GMC) 97 (LH front by battery)
SAVANA 1500 VAN 97
SAVANA 2500 VAN 97 (gasoline)
SAVANA 3500 VAN 97 (gasoline)
SUBURBAN 1500 97 (gasoline, LH front engine compartment)
SUBURBAN 2500 97 (gasoline, LH front engine compartment)
TAHOE 97 (gasoline, LH front engine compartment)
YUKON 97 (gasoline, LH front engine compartment)
Frequently Asked Questions
What is a PCM and what does it do?
What is a PCM and what does it do?
The Powertrain Control Module (PCM) is your vehicle’s main computer. It controls critical engine and transmission functions, such as fuel injection, ignition timing, and transmission shift points, to ensure optimal performance, fuel efficiency, and emissions control.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the PCM with the exact software and calibrations for your truck’s specific engine, transmission, and options. This ensures perfect compatibility and function right out of the box, with no additional programming needed.
Is this part difficult to install myself?
Not at all. For most DIYers with basic tools, this is a simple, plug-and-play installation that typically takes less than 30 minutes. Our step-by-step guide walks you through the process.
Will this fix my Check Engine Light?
If the Check Engine Light is on due to an internal PCM failure (like codes P0601, P0605, etc.) or a PCM-related sensor circuit fault, then yes, this replacement module will resolve the issue and the light will turn off.
My original part number is 8162296840. Will this work?
Yes, this module is a fully compatible replacement for part number 8162296840. We guarantee it will function correctly in your vehicle.