Restore Peak Performance to Your GM Truck or SUV
Is your 1998 or 1999 Chevy Suburban, Tahoe, or GMC Yukon running rough, shifting erratically, or refusing to start? The Powertrain Control Module (PCM), the central computer of your vehicle, is often the culprit behind these frustrating issues. This replacement PCM, part number 09366810, is the definitive solution to get your truck back on the road with reliability and confidence. It serves as the brain for your engine and transmission, managing everything from fuel injection and ignition timing to transmission shift points and emissions controls.
From the Diagnostic Bay
We had a 1999 GMC Sierra 2500 come into the shop with a persistent check engine light and a harsh 1-2 shift that the owner had been chasing for months. He had already replaced the throttle position sensor and a transmission solenoid based on generic code readings, with no improvement. After hooking up our professional scanner, we saw erratic data coming from the PCM. We installed one of our VIN-programmed modules, performed the quick security relearn, and the truck immediately ran and shifted like it just rolled off the factory line. It’s a classic case where throwing parts at a problem costs more than correctly diagnosing a faulty computer from the start.
Is Your Vehicle Showing Signs of a Failing PCM?
- ✔ Check Engine Light is on with various, often confusing, trouble codes.
- ✔ Unexplained drop in fuel economy (MPG).
- ✔ Engine stalling, stumbling, or running rough at idle.
- ✔ Harsh or delayed automatic transmission shifting.
- ✔ The vehicle cranks but refuses to start (no-start condition).
- ✔ Failure to pass state emissions testing.
- ✔ Intermittent electrical issues that seem to have no source.
The Simple, Plug-and-Play Solution for Your 1998-1999 Suburban PCM
Don’t settle for a generic, unprogrammed module that will require an expensive trip to the dealership. We take the hassle and guesswork out of the repair. When you order from us, we use the Vehicle Identification Number (VIN) you provide to flash the module with the latest, most stable GM-certified software specific to your vehicle’s configuration. This ensures perfect compatibility and optimal performance right out of the box. This module is a direct replacement for part numbers 16250279, 09366810, and 09355699, and fits a wide range of popular GM trucks and vans from that era.
Installation is straightforward for any DIY mechanic or professional technician. Simply disconnect the battery, locate your old PCM in the engine bay (typically on the driver’s side), unbolt it, swap the connectors to the new unit, and bolt it back in. In many cases, the vehicle will start and run immediately. Some vehicles may require a simple security relearn procedure, which can often be done without special tools.
Extensive Compatibility Beyond the Suburban
While this is a perfect fit for the 1998-1999 Suburban PCM, it is also the correct electronic control module for a wide array of GM vehicles, including:
- Cadillac Escalade (1999)
- Chevrolet & GMC C/K 1500, 2500, 3500 Pickups (1998-1999)
- Chevrolet Tahoe & GMC Yukon (1998-1999)
- Chevrolet Astro & GMC Safari Vans (1998-1999)
- Chevrolet Express & GMC Savana Vans (1998)
- Oldsmobile Bravada, Chevy S10 Blazer, GMC S15 Jimmy (1998)
- And more… (Please verify your part number)
Frequently Asked Questions
Do I need to program this module?
No! This module comes fully programmed to your vehicle’s specific VIN. We handle all the flashing with the latest GM software before it ships, saving you a costly trip to the dealer.
Where is the PCM located on my 1999 Suburban?
On most 1998-1999 Suburbans, Tahoes, and pickups, the PCM is located in the engine compartment on the driver’s side, near the fender or firewall.
What is a security or CASE relearn?
A CASE (Crankshaft Angle Sensor Error) relearn synchronizes the new PCM with your engine’s crankshaft position sensor. Some vehicles may require this procedure after installation to clear a check engine light. This is a simple procedure that can be performed by any mechanic with a capable bi-directional scan tool.
How do I send you my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to reply with your VIN. We cannot ship your part until we receive the VIN, as the programming is essential for the part to function.
Is this compatible with part number 16250279?
Yes, this module is a direct replacement for service numbers 16250279, 09366810, and 09355699. As long as your original module has one of these numbers, this part will work for your vehicle.