Restore Your Vehicle’s Heartbeat and Drive with Confidence
There’s nothing more frustrating than an engine that won’t cooperate. Whether you’re dealing with a persistent check engine light, erratic shifting, a no-start condition, or mysterious stalling, a faulty Powertrain Control Module (PCM) can bring your entire day to a halt. It’s the brain of your vehicle, and when it’s not functioning correctly, nothing else will. This replacement PCM, part number 16229684, is the definitive solution to get your trusted GM truck or van back to its reliable, hardworking self. We take the guesswork out of the repair by professionally programming the module to your vehicle’s specific VIN before it ever leaves our facility. This ensures a seamless installation and restores the precise performance you depend on.
Warning Signs and How to Overcome Them
If your vehicle is exhibiting any of these symptoms, a failing computer may be the culprit. This module is designed to resolve these common issues and restore peak performance:
- ✔ Check Engine Light: Specifically for internal module failure codes like P0601, P0604, or P0606.
- ✔ No-Start or Stalling: The engine cranks but refuses to start, or it stalls unexpectedly while driving.
- ✔ Poor Fuel Economy: A sudden, unexplained drop in your vehicle’s MPG.
- ✔ Failed Emissions Test: Inability to pass smog checks due to module-related errors.
- ✔ Harsh or Incorrect Shifting: The transmission shifts erratically or gets stuck in one gear.
- ✔ Communication Errors: Your scan tool can’t communicate with the PCM.
An Expert’s Story: The Ghost in the Machine
I once worked on a ’97 Tahoe that had its owner at his wit’s end. It would stall randomly at stoplights—no codes, no warning. He had replaced the fuel pump, ignition coil, and multiple sensors. The problem persisted. Finally, we hooked up a scope and monitored the PCM’s outputs. We found the injector drivers were intermittently dropping out. We installed a VIN-programmed PCM, just like this one, and the problem vanished instantly. It was a powerful reminder that sometimes, the issue lies right at the core, and having a properly prepared central computer is the only true fix.
Guided Installation for Your 1997 Savana 2500 PCM
Replacing your vehicle’s computer is a straightforward process that you can confidently handle. Follow these simple steps to get back on the road quickly.
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most of these GM models, the PCM is found in the engine compartment, typically on the driver’s side near the battery or firewall, housed in a black plastic bracket.
- Disconnect and Remove: Carefully unplug the color-coded wiring harnesses. They have locking tabs that need to be released. Once disconnected, unbolt or unclip the old module from its mounting bracket and remove it.
- Install the New PCM: Seat your new, pre-programmed module into the mounting bracket. Securely reconnect the wiring harnesses, ensuring they click firmly into place.
- Power Up: Reconnect the negative battery terminal. The vehicle is now ready for the final step.
- Perform Security Relearn: Your vehicle’s anti-theft system may need to be synchronized with the new PCM. This simple ‘key-on’ procedure typically takes about 10-15 minutes. Instructions are readily available online for your specific model (often called the Passlock or VATS relearn procedure).
Tailored Fit for Your Ride
This module is a direct-fit replacement for a wide range of GM vehicles. Please verify your model and year from the list below to ensure perfect compatibility.
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)
S10/S15/SONOMA 97 (6-262, 4.3L)
BLAZER S10/JIMMY S15 97 (6-262, 4.3L)
SUBURBAN 1500 97 (gasoline, LH front engine compartment)
SUBURBAN 2500 97 (gasoline, LH front engine compartment)
TAHOE 97 (gasoline, LH front engine compartment)
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)
SAVANA 1500 VAN 97
SAVANA 2500 VAN 97 (gasoline)
SAVANA 3500 VAN 97 (gasoline)
SAFARI (GMC) 97 (LH front by battery)
ASTRO 97 (LH front by battery)
YUKON 97 (gasoline, LH front engine compartment)
BRAVADA 97 (6-262, 4.3L)
ISUZU HOMBRE 97 (4.3L, 6 cylinder)
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. We handle all the programming for you. Simply provide your vehicle’s 17-digit VIN during or after checkout, and we will flash the module with the latest GM-certified software for your specific vehicle. It arrives ready to install.
Where is the PCM located on my 1997 truck/van?
On the vast majority of these models, you will find the PCM inside the engine bay on the driver’s side. It’s typically mounted to the inner fender wall near the battery and is housed in a protective black plastic case.
What is the security relearn procedure?
This is a simple process to sync the new PCM with your vehicle’s anti-theft system. It usually involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. This allows the components to recognize each other. Your ‘Security’ or ‘Theft’ light will typically turn off after a successful relearn.
Is this a plug-and-play part?
Yes, because we program it to your VIN, it is a plug-and-play installation. The only additional step required for many vehicles is the security relearn procedure, which does not require any special tools.
Will this fix my transmission shifting problems?
If the erratic shifting is caused by faulty signals or processing within the PCM, then yes, this module is designed to correct those issues and restore smooth, proper transmission function. However, mechanical issues within the transmission itself would require a different repair.