Is Your 1998-1999 GM Truck or Van Running Rough?
If your Tahoe, Suburban, or Express Van is suffering from a persistent check engine light, erratic shifting, a no-start condition, or poor fuel economy, a failing Powertrain Control Module (PCM) is often the culprit. As a mechanic with over two decades of experience under the hood, I’ve seen these exact symptoms countless times. You need a reliable, correctly programmed replacement to restore your vehicle’s performance and dependability. This is a tested, used OEM engine computer, part number 09355699, that serves as the brain of your vehicle’s engine and transmission.
The Simple, Reliable Solution: Programmed & Ready to Install
Don’t waste time and money at a dealership. We take the guesswork out of the repair. When you purchase this module, we will flash it with the latest official GM software updates, specifically calibrated to your vehicle using the VIN you provide. This ensures that once it arrives, it’s ready for a straightforward installation, restoring factory performance and communication between all your vehicle’s systems.
From the Shop Floor: A Real-World Diagnosis
“A customer’s ’99 Suburban came in last week on a tow truck. It would crank but not start. They had already replaced the fuel pump, thinking that was the issue. After a quick check with a noid light, I saw there was no injector pulse. A scan tool confirmed no communication with the PCM. The root cause wasn’t the fuel pump, but a failed driver circuit inside the original PCM. We installed one of these pre-programmed units, and the truck fired right up on the first try. It’s a common misdiagnosis that costs people time and money.”
Why Choose Our Pre-Programmed 1998-1999 Tahoe PCM?
- ✔ VIN-Specific Programming: We flash the module with the newest GM software for your exact vehicle, ensuring perfect compatibility.
- ✔ Fixes Common Issues: A direct solution for problems like harsh shifting, false sensor codes, stalling, and no-start conditions.
- ✔ Cost-Effective Repair: Get a dependable, tested OEM part without the high cost of a new unit from a dealer.
- ✔ Broad Compatibility: This module, identified by service number 09355699, fits a wide range of GM trucks and vans. It is also a direct replacement for part numbers 16266645, 16250279, 16258815, and 09366810.
Plug-and-Play Installation: No Dealer Visit Required
Installing your replacement PCM is a job you can do in your own driveway. Follow these simple steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most of these trucks and vans (like the Tahoe, Yukon, and Pickups), the PCM is located in the engine bay on the driver’s side, near the firewall or inner fender. On Express/Savana vans, it’s often in the rear of the engine compartment.
- Disconnect the Connectors: Carefully unclip and remove the wiring harness connectors from the old module. Inspect the pins for any corrosion or damage.
- Swap the Modules: Unbolt the old PCM from its bracket and secure the new one in its place.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click. Reconnect your battery terminal.
- Security Relearn (If Necessary): In some cases, a simple 10-minute security relearn procedure may be required. This involves turning the key to the ‘ON’ position for 10 minutes, then off, and then starting the vehicle.
Important: Please provide your vehicle’s 17-digit VIN in the notes at checkout or send it to us in a message after your purchase. We cannot ship your order until we have your VIN to complete the programming.