Is Your Late ’90s GM Truck or Van Giving You Headaches?
If you’re dealing with frustrating issues like intermittent stalling, erratic shifting, a persistent check engine light, or a complete no-start condition, the problem often points directly to a failing Powertrain Control Module (PCM). For these workhorse GMT400 platform vehicles, the PCM is the central command center. When it starts to fail, it can mimic a dozen other problems, leading to expensive and incorrect repairs. Before you replace another sensor or a fuel pump, consider the brain of the operation.
This is a reliable, tested OEM PCM, service number 16250279, carefully sourced from a salvaged vehicle. We take the guesswork and hassle out of the replacement process. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest official GM software calibration for your specific vehicle. This means it arrives at your door ready for a simple, plug-and-play installation.
Real-World Diagnostics: A Familiar Story
“Just last month, a customer brought in his ’99 Tahoe that would die at stoplights and had a lazy 1-2 shift. He’d already replaced the throttle position sensor and the fuel filter with no luck. We connected our scanner and saw erratic data from multiple sensorsโa classic sign of a failing computer, not failing sensors. We confirmed power and ground at the PCM connectors were solid, which ruled out a wiring issue. Swapping in a pre-programmed PCM like this one had his Tahoe running perfectly in under 15 minutes. It’s a fix I’ve performed hundreds of times on these trucks and vans.”
Why Choose Our Pre-Programmed PCM?
- โ VIN-Programmed for You: Arrives ready to install with the correct software for your vehicle. No expensive trips to the dealership for programming.
- โ Solves Common Problems: A direct fix for issues like rough idle, poor fuel economy, harsh shifting, and false sensor codes.
- โ Cost-Effective Solution: Get a reliable, tested OEM part for a fraction of the cost of a new module.
- โ Broad Compatibility: This module, identified by service ID 9355699, was a workhorse for GM, fitting a massive range of trucks, SUVs, and vans.
Easy Installation for Your 1998-1999 Suburban 2500 PCM
You don’t need to be a master mechanic to get your truck back on the road. The PCM is typically located in the engine bay on the driver’s side. Follow these simple steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: Find the module on the driver’s side of the engine compartment, near the fender.
- Disconnect Connectors: Carefully unclip and remove all the wiring harness connectors from the old module.
- Swap the Module: Unbolt the old PCM from its bracket and set it aside. Mount the new module in its place.
- Reconnect Everything: Plug the wiring harnesses firmly into the new PCM and reconnect your battery terminal.
- Start the Engine: Your vehicle is ready to go! In some cases, a security relearn procedure may be necessary, which can be done without special tools.
Expert Pro Tip: Connector Inspection
Before plugging in your new PCM, take a moment to inspect the vehicle’s harness connectors. Over 20+ years, moisture can cause corrosion on the pins, leading to poor connections. Use a small brush and some quality electronics cleaner to gently clean any green or white residue off the pins and ensure a solid, clean connection. This simple step prevents a host of issues and ensures your replacement module can communicate effectively.
Guaranteed Fitment
This module is a direct replacement for several part numbers, including 16250279, 09355699, 16266645, 16258815, and 09366810. It is compatible with a wide array of 1998-1999 GM models such as the Chevrolet and GMC 1500, 2500, and 3500 Pickups, Suburban, Tahoe, Yukon, Express, Savana, and more. By providing your VIN, you guarantee we send a module programmed specifically for your vehicle’s systems.