Is Your 1998 GMC Safari Running Rough?
If you’re dealing with frustrating issues like stalling at stoplights, erratic transmission shifting, a persistent check engine light, or even a no-start condition, the problem might not be a bad sensor or a wiring issue. After 20+ years on the road, the Powertrain Control Module (PCM) is a common point of failure. I’ve seen dozens of these classic GM vans and trucks in my bay with mysterious electrical gremlins that all traced back to a faulty engine computer.
Expert Pro Tip from a 20-Year Technician
Before you condemn your old PCM, take a moment to inspect the wiring harness connectors that plug into it. On the Safari and Astro vans, the PCM is located near the battery, where corrosion from battery acid fumes can sometimes damage the pins and terminals. A quick cleaning with a contact cleaner and a small brush can sometimes solve intermittent connection problems. If the pins are clean and the problem persists, the module itself is the likely culprit.
The Direct Solution: A VIN-Programmed 1998 GMC Safari PCM
Forget the hassle and expense of a dealership visit. This is a dependable, used OEM Powertrain Control Module that has been meticulously tested and programmed specifically for your vehicle. We use your vehicle’s VIN to flash the module with the latest, most stable software updates from General Motors. This ensures that it communicates perfectly with your engine, transmission, and all related systems, restoring the performance and reliability you depend on.
- ✔ VIN-Programmed for Your Vehicle: We handle all the programming before we ship. It arrives ready to install.
- ✔ Solves Common Failure Symptoms: Effectively addresses issues like harsh shifting, poor fuel economy, false sensor codes, and no-start conditions.
- ✔ Cost-Effective Repair: A smart, affordable alternative to a new module from the dealer, without sacrificing quality or function.
- ✔ Broad Compatibility: This module is a direct replacement for a wide range of GM trucks and vans from the era.
Plug-and-Play Installation: No Dealer Visit Required
You can get your Safari back on the road in under 30 minutes with basic hand tools. Here’s how simple it is:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the PCM: On your 1998 GMC Safari, the PCM is located in the engine compartment, on the driver’s side, right next to the battery.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed module into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle is now ready to start.
Guaranteed Compatibility
This PCM is a direct replacement for units with the service ID 09355699 and is interchangeable with the following part numbers:
09355699, 16266645, 16250279, 16258815, 09366810, 9366810
Please provide your vehicle’s 17-digit VIN in the notes at checkout or send us a message after your purchase. We cannot ship your part until we have your VIN to complete the required programming.