Is Your 1998 Savana Van Running Rough? The PCM Might Be the Culprit.
If you’re dealing with frustrating issues like a persistent Check Engine Light, poor fuel economy, erratic shifting, or even a no-start condition in your 1998 GMC Savana 2500, the problem may lie with a failing Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission operation. When it starts to fail, it can cause a cascade of confusing and seemingly unrelated symptoms that can be difficult to diagnose.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Engine stalling, stumbling, or misfiring.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or delayed automatic transmission shifting.
- ✔ The vehicle fails to start, even with a good battery and starter.
- ✔ Inaccurate or failing readings on your dashboard gauges.
- ✔ Failure to pass an emissions test.
The Direct-Fit Solution: Your 1998 Savana 2500 PCM
Don’t let a faulty computer keep your reliable workhorse off the road. This Powertrain Control Module is a direct-fit replacement for your 1998 GMC Savana 2500, ensuring you get back the performance and reliability you depend on. We take the guesswork out of the repair by pre-programming the module specifically for your vehicle. All you need to do is provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout. Our technicians will flash the unit with the latest, most stable GM-approved software updates, ensuring optimal engine and transmission performance from the moment you install it.
This module is a reliable, high-quality replacement for original part number 16250279 and is also compatible with part numbers 09366810 and 09355699. It has been thoroughly inspected and tested to meet or exceed original equipment standards, giving you a dependable solution without the high cost of a dealership part.
Installation is Simple
Once you receive your pre-programmed module, installation is straightforward. Simply disconnect the battery, locate and unplug your old PCM, and install the new one in its place. In many cases, the vehicle will start and run perfectly. Some GM vehicles of this era may require a simple security relearn or Crankshaft Variation (CASE) relearn procedure, which can often be performed without special tools. This ensures the new PCM communicates correctly with your vehicle’s anti-theft system and crankshaft position sensor for smooth operation.
Frequently Asked Questions
Do I need to program this module?
No. This PCM comes fully programmed to your vehicle’s specific VIN. We handle all the flashing and software updates before it ships, making it a true plug-and-play solution.
Where is the PCM located on my 1998 Savana 2500?
On most 1998 GM vans and trucks, including the Savana, the PCM is located in the engine compartment, typically on the driver’s side near the battery or on the inner fender. It’s a silver metal box with large electrical connectors.
How do I provide my VIN?
You can add your 17-digit VIN to the notes section during checkout. If you forget, don’t worry! We will contact you via email after your purchase to request the VIN before we program and ship your module.
What is a CASE relearn?
A CASE (Crankshaft Angle Sensor Error) relearn is a procedure that allows the new PCM to learn the specific position of the crankshaft reluctor wheel. If not performed, you may have a check engine light for code P1336. This procedure can often be done by a local mechanic with a capable scan tool.
Will this part fit other vehicles?
Yes, this module fits a wide range of GM trucks, vans, and SUVs from the late 1990s, including the Chevrolet Express, GMC Sierra, Chevrolet Tahoe, and Cadillac Escalade. Please verify your original part number and check the detailed fitment list to ensure compatibility.