Restore Your Truck’s Performance and Reliability
Is your 1997 Chevy Suburban 1500, Tahoe, or another classic GM truck giving you headaches? If you’re dealing with frustrating issues like stalling at stoplights, erratic engine performance, a persistent check engine light, or a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s a critical component failure that can leave you stranded. This replacement PCM, part number 16229684, is the definitive solution to get your dependable truck back on the road, running as it should.
As the electronic brain of your vehicle, the PCM controls everything from fuel mixture and ignition timing to transmission shift points. When it fails, the symptoms can be unpredictable and difficult to diagnose. We take the guesswork and hassle out of the repair. Unlike a generic part from a salvage yard, this module comes fully programmed with the latest GM software, specifically matched to your vehicle’s VIN. This means no expensive trips to the dealership for programming—it’s ready for installation right out of the box.
A Technician’s Notebook: The Intermittent Stall Case
I had a ’97 GMC Yukon in my bay that was a real puzzle for its owner. It would run perfectly for days, then suddenly stall and refuse to restart for an hour. There were no consistent codes, just an occasional P0601 (Internal Control Module Memory Check Sum Error) that would appear and disappear. After verifying the wiring and grounds were solid—a crucial first step on these GMT400 platforms—I knew the PCM’s internal processor was failing intermittently. Swapping in a VIN-programmed module like this one provided an immediate, permanent fix. The customer went from being afraid to drive his truck to trusting it again on long trips. That’s the peace of mind a reliable PCM provides.
Is Your GM Truck Showing These Signs of PCM Failure?
- ✔ Check Engine Light is on with codes like P0601, P0605, or other internal processor faults.
- ✔ The engine cranks but won’t start for no apparent reason.
- ✔ Unexplained stalling, especially when coming to a stop or at idle.
- ✔ Noticeably poor fuel economy and sluggish acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with scan tools (U-codes).
A Straightforward Guide to Installation
Replacing the 1997 Suburban 1500 PCM is a job most DIYers can handle in under an hour with basic hand tools. It’s located in the engine bay for easy access.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On most compatible models, you’ll find the module in the engine compartment on the driver’s side, often near the battery or firewall.
- Disconnect the Harnesses: Carefully unclip and remove the electrical wiring harnesses connected to the old module. The connectors are color-coded to prevent mix-ups.
- 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 module onto the bracket and securely tighten the bolts.
- Reconnect and Finalize: Plug the wiring harnesses back into the correct slots on the new PCM. Reconnect the negative battery terminal. The vehicle is now ready to start.
Verified Fitment For These 1997 GM Models
This module is a direct-fit replacement for a wide range of gasoline-powered 1997 General Motors vehicles. Please confirm your model is listed below. It is compatible with part numbers 16229684 and 8162296840.
- ✔ Astro / Safari (GMC)
- ✔ Blazer S10 / Jimmy S15 (4.3L V6)
- ✔ Bravada (4.3L V6)
- ✔ Chevrolet/GMC Pickup (1500, 2500, 3500)
- ✔ Express / Savana Van (1500, 2500, 3500)
- ✔ Isuzu Hombre (4.3L V6)
- ✔ S10 / S15 / Sonoma (4.3L V6)
- ✔ Suburban (1500, 2500)
- ✔ Tahoe / Yukon
What exactly is a PCM?
What exactly is a PCM?
The Powertrain Control Module (PCM), also called the Engine Control Module (ECM), is a powerful computer that acts as the ‘brain’ for your engine and transmission. It takes data from sensors all over the vehicle to control fuel injection, spark timing, and transmission shifting for optimal performance, fuel efficiency, and emissions.
Will I need to program this module?
No. We handle all the programming for you before we ship. Simply provide your vehicle’s 17-digit VIN during checkout, and we will flash the module with the correct, updated GM software for your specific vehicle. It arrives ready to install.
Where is the PCM located on my 1997 Suburban?
On the 1997 Suburban and most other compatible models like the Tahoe, Yukon, and pickups, the PCM is located in the engine compartment on the driver’s side (LH side), typically mounted near the battery or on the fender well.
What information do you need from me?
After you purchase the module, we will need your vehicle’s complete 17-digit Vehicle Identification Number (VIN). This is essential for us to load the exact software your truck needs to run properly.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (common codes include P0601-P0606), then yes, this new module will resolve the issue. However, if the light is on for another reason, such as a faulty sensor, that separate issue will still need to be addressed.