Is Your Workhorse Van Off the Job?
There’s nothing more frustrating than a reliable GMC Savana that suddenly won’t start, runs rough, or shifts erratically. When your 1998 or 1999 Savana 2500 is down, you’re not just inconveniencedâyou’re losing time and money. Often, the culprit is a failing Powertrain Control Module (PCM), the electronic brain of your engine and transmission. Symptoms can be confusing, ranging from a persistent check engine light with baffling codes to a complete no-start condition where everything else seems fine.
The Direct-Fit Solution: A Pre-Programmed PCM
Forget expensive dealership visits and the hassle of finding a shop that can program a replacement module. This is a quality, tested PCM that has been carefully sourced from a salvaged vehicle. We take the guesswork out of the repair by programming it specifically for your van using your Vehicle Identification Number (VIN). It arrives loaded with the latest GM software updates, ensuring optimal performance and communication with all other vehicle systems. This is the most straightforward way to get your van running right again.
- â VIN Programmed: Arrives ready to install, flashed to your specific vehicle.
- â Solves Common Issues: Corrects problems like harsh shifting, no-start, poor fuel economy, and false sensor codes.
- â Cost-Effective Repair: Get a reliable, tested part without the high cost of a new module.
- â Broad Compatibility: Replaces multiple part numbers, including 09355699, 16266645, 16250279, and more.
From the Shop Floor: A Real-World Diagnostic
“A customer’s ’99 Savana 3500 came in on the hook last monthâit would crank but not start. The fuel pump was priming, and it had spark, but the injectors weren’t firing. We hooked up the scan tool and got a ‘No Communication with PCM’ error. After verifying the PCM had solid power and ground at the connector pinsâa critical first step many people skipâwe knew the module itself had failed internally. This is a classic failure I’ve diagnosed on hundreds of these GM Vortec-era trucks and vans. Swapping in a programmed PCM like this one had them back on the road in under 30 minutes.”
Plug-and-Play Installation: No Dealer Visit Required
You can perform this repair right in your driveway with basic hand tools. Our programming service makes this a simple component swap.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most Savana and Express vans, the PCM is located in the engine compartment, typically on the driver’s side near the battery or air filter housing.
- 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 replacement PCM into place and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal. The vehicle is now ready to start.
Confirming Your Part Number
This module, identified by service ID number 9355699, is a direct replacement for a wide range of GM trucks and vans from this era. It is compatible with part numbers 16266645, 09355699, 16250279, 16258815, 09366810, and 9366810. Providing your VIN during checkout ensures we send a perfectly matched and correctly programmed unit for your 1998-1999 Savana 2500 PCM, guaranteeing a successful repair.