Restore Your Van’s Performance and Reliability
Is your 1998 GMC Savana 2500 van running poorly, stalling unexpectedly, or showing a persistent Check Engine Light? You’re not just dealing with an annoyance; you’re facing a potential Powertrain Control Module (PCM) failure. As the brain of your vehicle’s engine and transmission, a faulty PCM can cause a host of frustrating and hard-to-diagnose issues. I’ve spent years in the service bay tracing bizarre electrical problems back to this single component. This isn’t just a part; it’s the solution to getting your dependable workhorse back on the road, running as it should.
This replacement PCM is the definitive fix for your vehicle. We take the guesswork and hassle out of the repair by programming the module specifically for your van using your VIN. This ensures it arrives with the latest GM software updates, ready for installation. You get a reliable part that communicates flawlessly with your vehicle’s systems, restoring lost power, improving fuel economy, and ensuring smooth transmission shifting. Don’t let a failing computer sideline your van. Get the correct, pre-programmed 1998 Savana 2500 PCM and solve the problem for good.
Case Study: The Intermittent No-Start
A local contractor brought in his Savana 2500 work van with a ghost of a problem. It would start perfectly for weeks, then suddenly refuse to start, only to fire right up an hour later. No consistent codes were stored, just a few random communication errors. After checking the usual suspects—battery, grounds, ignition switch—I suspected a heat-soaked PCM. On these vans, the under-hood temperatures can be brutal. I focused on the PCM and found that after warming it with a heat gun, the van would fail to start every time. The internal circuits were failing when they got hot. Replacing the module with a quality, correctly programmed unit solved the issue permanently. This is a classic failure mode I’ve seen on dozens of these GM work vans.
Common Signs of a Failing PCM
If you’re experiencing any of the following, a faulty PCM is a likely culprit. In my shop, these symptoms almost always point to the engine’s computer.
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or other communication codes.
- ✔ The engine cranks but refuses to start.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Noticeably poor fuel mileage.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The cooling fans run constantly or not at all.
- ✔ No communication with your scan tool.
A Straightforward Guide to Installation
Installing your new 1998 Savana 2500 PCM is a job most DIYers can handle with basic tools. The key is our pre-programming service, which eliminates the need for a trip to the dealership. Follow these steps for a successful replacement.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On the 1998 Savana, the PCM is typically located in the engine compartment on the driver’s side, near the battery or air filter housing.
- Disconnect the Wiring: Carefully unplug the electrical connectors from the old module. These connectors have locking tabs that need to be released. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the PCM from its mounting bracket. It’s usually held in place by a few small bolts.
- Install the New Module: Mount your new, pre-programmed PCM onto the bracket and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: Your vehicle may require a security relearn procedure to recognize the new PCM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. Consult your owner’s manual for the specific procedure for your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 09355699, 16250279, and 09366810. It is guaranteed to fit and function correctly on the following gasoline-engine GM vehicles. Please match your vehicle and original part ID to ensure compatibility.
1500/2500/3500 Pickup (1998-1999)
Astro Van (1998-1999)
Blazer S10 (1998)
Express 1500/2500/3500 Van (1998)
S10 Pickup (1998)
Suburban 1500/2500 (1998-1999)
Tahoe (1998-1999)
GMC:
1500/2500/3500 Pickup (1998-1999)
Envoy (1998)
Jimmy S15 (1998)
Safari Van (1998-1999)
Savana 1500/2500/3500 Van (1998)
Sonoma S15 (1998)
Yukon (1998-1999)
Cadillac:
Escalade (1999)
Oldsmobile:
Bravada (1998)
Isuzu:
Hombre (1998)
This pre-programmed 1998 Savana 2500 PCM is your most reliable and efficient path to resolving complex engine management problems and restoring your vehicle’s peak operational condition.
Frequently Asked Questions
How does the VIN programming work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians use this number to load the exact, most current GM-approved software for your specific vehicle onto the module before we ship it. This ensures it works correctly right out of the box.
Do I need to send my old PCM back (core charge)?
No, there is no core charge or requirement to return your old module for this part. You can keep your old part or recycle it locally.
Will this fix my specific problem?
This PCM is a direct replacement for a faulty original unit and will resolve issues caused by PCM failure, such as certain no-start conditions, specific diagnostic trouble codes (like P0601), and erratic engine behavior. However, proper diagnosis is key. Ensure your mechanic has ruled out other potential causes like bad sensors or wiring issues.
What is a security relearn and is it difficult?
A security relearn, or ‘CASE learn’, syncs the new PCM with your vehicle’s anti-theft system. It’s a simple procedure that you can do yourself with just the ignition key. The process typically takes about 30 minutes and involves a sequence of turning the key on and off. We include general instructions, but the exact steps can be found in your vehicle’s service manual.
Is this part compatible with other part numbers?
Yes, this module, 09355699, is a fully compatible replacement for service numbers 16250279 and 09366810. If your original module has one of these numbers, this part will work for your vehicle.