Restore Your Van’s Performance and Reliability
Is your 1998 GMC Savana 1500 Van running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. A faulty PCM can cause a cascade of frustrating issues, from poor fuel mileage and failed emissions tests to a van that won’t start at all. Don’t let a bad module keep your workhorse off the road. This is your direct, reliable solution to get your vehicle operating correctly again.
We take the guesswork and hassle out of the repair. Each module is meticulously programmed with the latest official GM software updates, specifically matched to your van’s Vehicle Identification Number (VIN). This ensures perfect communication between the engine and transmission, restoring the original performance and efficiency you depend on. Simply provide your VIN after purchase, and we’ll handle the complex programming before it even ships. This is the most effective way to solve those nagging electronic issues and restore your confidence behind the wheel.
A Technician’s Notebook
I remember a 1998 Chevy C1500 with the 5.7L—essentially the same powertrain as this Savana—that came into my bay with a bizarre, intermittent no-start condition. No codes, good fuel pressure, good spark when it decided to run. The owner had replaced half the sensors under the hood. After hours of chasing my tail, I hooked up a lab scope to the PCM’s main power and ground circuits. I saw a slight voltage drop inside the module itself during cranking. On a hunch, we swapped in one of these pre-programmed PCMs. It fired up on the first try and never failed again. These older PCMs can develop internal circuit board failures that don’t always set a clear trouble code, making them a real headache to diagnose without experience.
Is Your Van Showing These Symptoms?
A failing PCM can manifest in many ways. If you’re experiencing any of the following, a new module is the likely fix:
- ✔ Unexplained Check Engine Light
- ✔ Engine stalling or shutting off while driving
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Vehicle won’t start, but the battery and starter are good
- ✔ Poor fuel economy
- ✔ Failed emissions inspection
- ✔ Diagnostic Trouble Codes (DTCs) like P0601 or P0606 (Internal Control Module Memory Check Sum Error)
A Straightforward Guide to Installation
Replacing the PCM on your Savana is a job most DIYers can handle with basic tools. Our pre-programming service makes it a true plug-and-play repair.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On most 1998 Savana vans, the PCM is located in the engine compartment on the driver’s side, often near the battery or firewall.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors from the old module. There may be locking tabs or levers; do not force them.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt your new, pre-programmed PCM into the mounting bracket.
- Reconnect Everything: Firmly plug the wiring harnesses into the new module until they click into place. Reconnect the negative battery terminal.
- Final Step: In some cases, a security relearn procedure may be needed, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. Your vehicle’s service manual will have the specific, simple steps if required.
Guaranteed Vehicle Compatibility
This module, programmed to your VIN, is a direct replacement for service numbers 09355699, 16250279, and 09366810. It is guaranteed to fit the following GM vehicles:
- 1998-1999 Chevrolet & GMC 1500/2500/3500 Pickups (Gasoline)
- 1998-1999 Chevrolet Suburban & Tahoe (Gasoline)
- 1998-1999 GMC Yukon (Gasoline)
- 1998-1999 Chevrolet Express & GMC Savana 1500/2500/3500 Vans (Gasoline)
- 1998-1999 Chevrolet Astro & GMC Safari Vans
- 1999 Cadillac Escalade
- 1998 Chevrolet S10 Blazer, GMC S15 Jimmy, Oldsmobile Bravada, GMC Envoy (w/o option ZN4)
- 1998 Chevrolet S10/S15 Sonoma & Isuzu Hombre (4.3L, w/o option ZN4)
Why do you need my VIN?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential because it allows us to program the PCM with the exact software and calibrations specific to your vehicle’s engine, transmission, and options. This ensures seamless integration and proper function, eliminating the need for a trip to the dealer for expensive programming.
Is this a plug-and-play part?
Yes, because we program it to your VIN before shipping, it is designed to be a plug-and-play installation. In some rare cases, a simple security or anti-theft relearn procedure is required, which can be done without any special tools.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (like code P0601) or a software issue, this module will resolve it. However, you should always ensure that any other codes related to sensors or wiring are properly diagnosed and repaired first, as the PCM cannot fix a faulty external part.
How do I find my original part number?
The part number is printed on a sticker on your original PCM. This module is a direct replacement for part numbers 16250279, 09366810, and 09355699. As long as your vehicle is on our compatibility list, this module will work, even if your original number is slightly different, as we program it to your VIN.