Is Your 1998 GMC Safari Running Rough, Stalling, or Refusing to Start?
If you’re dealing with frustrating engine problems in your trusty GMC Safari, a failing Powertrain Control Module (PCM) is often the culprit. Over the years, I’ve seen hundreds of these GM vans and trucks in my shop with issues that stump most mechanics. Symptoms can be intermittent and confusing, but they almost always point back to the vehicle’s electronic brain. This isn’t just a replacement part; it’s a reliable, cost-effective solution to get your vehicle back in dependable condition.
This is a genuine, used OEM PCM that has been meticulously tested and is ready for service. We take the guesswork out of the repair by programming the module specifically for your vehicle using your VIN. This ensures all factory settings and the latest GM software updates are loaded, making the installation process straightforward.
Restore Your Van’s Performance with a VIN-Programmed PCM
A faulty 1998 GMC Safari PCM can cause a cascade of issues that can be difficult to diagnose. Replacing it with our pre-programmed unit can resolve many common and frustrating problems, including:
- โ Unexplained Check Engine Light illumination
- โ Engine stalling or cutting out while driving
- โ Complete no-start or hard-starting conditions
- โ Poor fuel economy and rough idling
- โ Harsh or erratic automatic transmission shifting
- โ Communication errors with diagnostic scan tools
Expert Pro Tip: Check Your Connectors First!
Before you condemn your old PCM, take a moment to inspect the large electrical connectors that plug into it. On these older Safari and Astro vans, the PCM is located by the battery, where it’s exposed to moisture and potential battery acid corrosion. I’ve seen cases where simply cleaning green or white corrosion from the pins with a small wire brush and electrical contact cleaner restored full function. It’s a 5-minute check that could save you time and money.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest advantages of our service is that this module arrives at your door ready to install. Since we handle the programming, you won’t need an expensive trip to the dealership for flashing or key relearning procedures. The installation is a simple swap.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On your 1998 GMC Safari, the PCM is typically found in the engine compartment on the driver’s side, near the battery.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new PCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle is now ready to start.
Guaranteed Compatibility
This engine computer is a direct replacement for units with service ID 9355699 and will interchange with the following part numbers:
Part Numbers: 09355699, 16266645, 16250279, 16258815, 09366810, 9366810
This module fits a wide range of GM trucks and vans from 1998-1999, including the Chevy Express, GMC Savana, Chevy/GMC Pickups, Tahoe, Yukon, and more. By providing your VIN, you guarantee we will send a perfectly matched and correctly programmed computer for your specific vehicle.