Is Your 1997 GM Truck or Van Running Rough?
If you’re dealing with a 1997 GMC Savana 3500, or one of the many other GM trucks and vans from that era, you know they’re built to work. But when the brain of the operationโthe Powertrain Control Module (PCM)โstarts to fail, it can bring your entire vehicle to a standstill. Over my 20+ years in the shop, I’ve seen these exact modules cause some of the most frustrating and hard-to-diagnose issues. The symptoms often seem random, leaving owners and even some technicians chasing their tails.
Common Signs of a Failing 1997 GM PCM
A faulty PCM doesn’t always fail completely. It often starts with intermittent problems that get progressively worse. If your truck is experiencing any of these, its computer is likely the culprit:
- โ Check Engine Light that is on with no clear cause, or communication error codes (U-codes).
- โ A complete no-start condition where the engine cranks but won’t fire up.
- โ Harsh or erratic automatic transmission shifting.
- โ Stalling for no reason, either at idle or while driving.
- โ Significant drop in fuel economy.
- โ The anti-theft or security light stays on, preventing the engine from starting.
From the Shop Floor: A Real-World Scenario
“A customer’s 1997 Chevy C2500 pickup came in last week with these exact symptoms. It would stall randomly at red lights and sometimes refuse to start in the morning. He’d already replaced the fuel pump and ignition coil with no luck. When I hooked up my professional scan tool, I couldn’t even establish a stable connection with the PCM. That’s a classic sign. After 20 years, the internal components, particularly the capacitors and solder joints on the main board, just can’t handle the constant heat cycles and vibration in the engine bay anymore. We installed one of these VIN-programmed PCMs, and the truck ran perfectlyโproblem solved in one go.”
The Direct-Fit, Programmed Solution
This isn’t just a replacement part; it’s a complete solution. This Powertrain Control Module is a direct-fit replacement for part numbers 8162296840 and 16229684. The most critical service we provide is programming it specifically for your vehicle before it ever leaves our facility.
Why VIN Programming is Essential
Back in 1997, GM vehicles had specific software calibrations based on the VIN. This determined everything from fuel injector pulse width to transmission shift points and emissions controls. Simply swapping a module from another truck won’t work correctly and can even cause damage. Our process eliminates that headache:
- โ Provide Your VIN: After your purchase, you’ll send us your 17-digit Vehicle Identification Number (VIN).
- โ We Handle the Flashing: Our technicians use your VIN to load the correct, factory-approved software and the latest updates from GM onto the module.
- โ Ready to Install: The PCM arrives at your door ready for a straightforward installation. No need for an expensive trip to the dealership for programming.
Will This Fit My Vehicle?
This module was a workhorse for GM and was used across a wide range of their most popular 1997 models. Please verify your vehicle is on this list. Note that for most trucks and full-size vans, the module is located in the left-hand (driver’s side) front of the engine compartment.
Confirmed Vehicle Fitment for 1997:
- โ Chevrolet Pickups (1500, 2500, 3500): Gasoline models.
- โ GMC Pickups (1500, 2500, 3500): Gasoline models.
- โ Chevrolet Vans (Express 1500, 2500, 3500): Gasoline models.
- โ GMC Vans (Savana 1500, 2500, 3500): Gasoline models.
- โ Chevrolet SUVs (Tahoe, Suburban 1500 & 2500): Gasoline models.
- โ GMC SUVs (Yukon): Gasoline models.
- โ Chevrolet S10 / GMC Sonoma: With 4.3L (V6) engine.
- โ Chevrolet Blazer / GMC Jimmy: With 4.3L (V6) engine.
- โ Oldsmobile Bravada: With 4.3L (V6) engine.
- โ Chevrolet Astro / GMC Safari: Located by the battery.
- โ Isuzu Hombre: With 4.3L (V6) engine.
Don’t let a faulty computer keep your reliable GM truck off the road. This VIN-programmed PCM is the most effective and efficient way to restore your vehicle’s performance and reliability. Order today and get your truck running right again.