Is Your 1997 GM Truck Running Rough?
Is your reliable 1997 Chevrolet 1500, GMC Sierra, Tahoe, or another classic GM truck suddenly giving you headaches? Unexplained stalling, a persistent Check Engine light, poor fuel economy, or erratic engine behavior can be frustrating and point to a complex issue. Often, the root cause lies with the brain of your vehicle’s engine management system: the Powertrain Control Module (PCM).
This vital component, also known as the Electronic Control Module (ECM), is the central command center for your engine and transmission. It precisely controls fuel injection, ignition timing, transmission shift points, and emissions systems. When it begins to fail, the symptoms can be widespread and difficult to diagnose, but they all lead to a vehicle that is unreliable and inefficient. A failing PCM doesn’t just affect performance; it can leave you stranded.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light: The light is on, and you may have codes related to module communication, sensor circuits, or processor faults.
- ✔ Engine Stalling or Misfiring: Your truck may stall intermittently, run rough, or misfire for no apparent reason.
- ✔ No-Start or Hard-Starting: The engine cranks but refuses to start, or takes an excessive amount of time to fire up.
- ✔ Poor Fuel Economy: A sudden and significant drop in your vehicle’s gas mileage is a common sign of an inefficiently running engine managed by a faulty PCM.
- ✔ Failed Emissions Test: The PCM directly controls the emissions system, and a failure will almost certainly result in a failed smog check.
- ✔ Erratic Transmission Shifting: You may experience harsh shifts, delayed engagement, or the transmission getting stuck in one gear (limp mode).
The Direct-Fit Solution: A Programmed 1997 Chevy 1500 PCM
This replacement Powertrain Control Module, part number 16229684, is the definitive solution to restore your vehicle’s factory performance and reliability. We eliminate the guesswork and high costs associated with engine computer replacement. Unlike a generic part from a local store or salvage yard, our module arrives at your door specifically programmed for your vehicle using your unique Vehicle Identification Number (VIN). We flash it with the latest official GM software updates, which often resolve original factory bugs and improve overall vehicle operation. This means no expensive trips to the dealership for programming are required. It’s a true plug-and-play solution designed to get you back on the road with confidence and minimal downtime.
Simple Installation Process
Installation is straightforward for anyone with basic mechanical skills. The PCM is typically located in the engine bay on the driver’s side, near the battery. The process involves:
- Disconnecting the Battery: Always disconnect the negative battery terminal first to prevent electrical damage.
- Removing the Old Module: Carefully unplug the large electrical harness connectors. They have locking tabs that need to be released. Then, unbolt the module from its bracket.
- Installing the New Module: Bolt the new, pre-programmed module into place and securely reconnect the electrical harnesses.
- Reconnecting the Battery: Reattach the negative battery terminal.
In some cases, a Crankshaft Variation Relearn (also known as a CASE relearn) may be required with a capable scan tool to clear a P1336 trouble code, but the vehicle will start and run without this procedure.
Guaranteed Fitment
This module is a direct replacement for part numbers 16229684 and 8162296840. It is compatible with a wide range of 1997 GM vehicles. Please confirm your vehicle is on the list below:
ASTRO 97 Electronic Control Module; (LH front by battery)
BLAZER S10/JIMMY S15 97 Electronic Control Module; (6-262, 4.3L)
BRAVADA 97 Electronic Control Module; (6-262, 4.3L)
CHEVROLET 1500 PICKUP 97 Electronic Control Module; gasoline (LH front engine compartment)
CHEVROLET 2500 PICKUP 97 Electronic Control Module; gasoline (LH front engine compartment)
CHEVROLET 3500 PICKUP 97 Electronic Control Module; gasoline (LH front engine compartment)
EXPRESS 1500 VAN 97 Electronic Control Module
EXPRESS 2500 VAN 97 Electronic Control Module; gasoline
EXPRESS 3500 VAN 97 Electronic Control Module; gasoline
GMC 1500 PICKUP 97 Electronic Control Module; gasoline (LH front engine compartment)
GMC 2500 PICKUP 97 Electronic Control Module; gasoline (LH front engine compartment)
GMC 3500 PICKUP 97 Electronic Control Module; gasoline (LH front engine compartment)
ISUZU HOMBRE 97 Electronic Control Module; 4.3L (6 cylinder)
S10/S15/SONOMA 97 Electronic Control Module; 6-262 (4.3L)
SAFARI (GMC) 97 Electronic Control Module; (LH front by battery)
SAVANA 1500 VAN 97 Electronic Control Module
SAVANA 2500 VAN 97 Electronic Control Module; gasoline
SAVANA 3500 VAN 97 Electronic Control Module; gasoline
SUBURBAN 1500 97 Electronic Control Module; gasoline (LH front engine compartment)
SUBURBAN 2500 97 Electronic Control Module; gasoline (LH front engine compartment)
TAHOE 97 Electronic Control Module; gasoline (LH front engine compartment)
YUKON 97 Electronic Control Module; gasoline (LH front engine compartment)
Don’t let a faulty computer keep your truck sidelined. Restore its performance and dependability with a properly programmed 1997 Chevy 1500 PCM. Order today, provide your VIN, and get the right part, ready to install, delivered to your door.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during or after checkout, and the module will arrive ready for installation.
What is a VIN and where do I find it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your vehicle. You can find it on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a plug-and-play installation?
Yes, for the vast majority of vehicles. Once you install the module, your vehicle will start and run. In some instances, a security relearn procedure or a CASE relearn may be needed with a scan tool to sync the module perfectly, but these are simple procedures for any qualified mechanic.
What if my part number is slightly different?
This module, 16229684, supersedes and is compatible with several other part numbers, including 8162296840. As long as your vehicle’s year, make, and model are on our compatibility list, this module will work when programmed to your VIN.
How do I provide my VIN after purchase?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship your order until we receive this information, as the programming is a critical step.