Restore Your GM Truck’s Brain and Get Back on the Road
Is your 1997 Oldsmobile Bravada, or another classic GM truck/van from that era, giving you headaches? If you’re dealing with frustrating issues like a persistent check engine light, stalling for no reason, poor fuel economy, or a complete no-start condition, the problem often points directly to a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, when the PCM fails, it can cause a wide range of confusing and debilitating symptoms. This isn’t just an inconvenience; it’s a critical component for your vehicle’s performance and reliability.
This is a direct-fit replacement Powertrain Control Module for vehicles requiring part number 16229684 or 8162296840. The best part? We take the biggest hassle out of the repair. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) after your purchase, and our technicians will program the module with the latest GM software updates specific to your truck or van. This means it arrives at your door ready to install, saving you a costly trip to the dealership for programming.
From the Diagnostic Bay: The Intermittent Stall Case
I remember a 1997 GMC Jimmy with the 4.3L V6 that came into my shop a few years back. The owner was at his wit’s end. The truck would run perfectly for days, then suddenly stall at a stoplight and refuse to restart for 20 minutes. There were no consistent trouble codes, just a history of random misfires. We checked fuel pressure, ignition components, and sensors—all tested fine. After hours of diagnostics, I noticed the PCM’s internal temperature was climbing higher than usual. On a hunch, we applied some directed heat to the module, and the engine immediately stalled. The culprit was a hairline crack in the circuit board that would separate when hot, cutting communication. A replacement 1997 Bravada PCM, programmed to the VIN, solved the problem instantly. It’s a classic failure mode for these older modules.
Is Your Vehicle Showing These Signs of PCM Failure?
- âś” Engine stalling or misfiring intermittently
- âś” Complete no-start condition where the engine cranks but won’t fire up
- âś” Harsh or erratic automatic transmission shifting
- âś” Significantly decreased fuel mileage
- âś” Check Engine Light is illuminated with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0605 (Internal Control Module Read Only Memory (ROM) Error)
- âś” Failure to communicate with a diagnostic scan tool
A Straightforward Guide to Installation
Replacing the PCM on these ’97 GM vehicles is a job most DIYers can handle with basic tools. This pre-programmed module makes it even simpler.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most of these trucks and vans (including the Bravada, S10, and full-size pickups), the PCM is located in the engine compartment, typically on the driver’s side near the battery or firewall.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors from the old PCM. These connectors have locking tabs that need to be released before you can pull them off. Avoid forcing them.
- Remove the Old PCM: Unbolt the module from its mounting bracket. Keep the hardware as you will need it for the new module.
- Install the New PCM: Mount your new, VIN-programmed PCM onto the bracket and secure it with the original hardware.
- Reconnect and Secure: Firmly plug the wiring harnesses back into the new module until they click into place. Reconnect your vehicle’s negative battery terminal.
- Final Check: Turn the key to the ‘On’ position for 10-15 seconds before starting the engine. This allows the system to initialize. Start your vehicle and enjoy restored performance!
Will This Fit My GM Vehicle?
This module is a guaranteed fit for the following 1997 models. Please confirm your part number (16229684) for a perfect match.
- âś” 1997 Oldsmobile Bravada (4.3L, 6-262)
- âś” 1997 Chevrolet/GMC S10, S15, Sonoma, Blazer, Jimmy (4.3L, 6-262)
- âś” 1997 Chevrolet/GMC C/K 1500, 2500, 3500 Pickup (Gasoline)
- âś” 1997 Chevrolet/GMC Suburban 1500, 2500 (Gasoline)
- âś” 1997 Chevrolet Tahoe / GMC Yukon (Gasoline)
- âś” 1997 Chevrolet Express / GMC Savana 1500, 2500, 3500 Van (Gasoline)
- âś” 1997 Chevrolet Astro / GMC Safari Van
- âś” 1997 Isuzu Hombre (4.3L, 6 cylinder)
Frequently Asked Questions
What exactly does a PCM do?
The Powertrain Control Module (PCM) is the main computer that controls your vehicle’s engine and transmission. It takes data from various sensors to manage fuel injection, ignition timing, emissions systems, and automatic transmission shift points for optimal performance and efficiency.
Do I need to get this module programmed by a dealer?
No. This is the key benefit of our service. We program the module to your vehicle’s specific VIN before we ship it. This means it’s ready for installation right out of the box, with no additional programming required.
What is a VIN and why do you need it?
The VIN is your vehicle’s unique 17-digit identification number. We use it to load the exact factory software and calibrations for your specific model, engine, transmission, and emissions equipment, ensuring perfect compatibility.
Where is the PCM located on a 1997 Bravada?
On the 1997 Oldsmobile Bravada, the PCM is typically found in the engine bay, mounted on the driver’s side inner fender, near the battery.
Will this fix my check engine light?
If the check engine light is on due to an internal PCM failure (like codes P0601-P0606), then yes, this replacement module will resolve the issue. However, if the light is on for another reason (e.g., a bad oxygen sensor), that separate issue will still need to be addressed.