Restore Peak Performance to Your GM Truck or Van
Is your 1998-1999 Chevrolet Express, GMC Savana, Tahoe, or Suburban suffering from frustrating and hard-to-diagnose issues? Problems like intermittent stalling, a persistent check engine light, erratic shifting, or a complete no-start condition can often be traced back to a single, critical component: the Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing everything from fuel delivery and spark timing to transmission shift points. When it fails, the symptoms can be confusing and often mimic other mechanical problems, leading to costly and unnecessary repairs.
This is your direct-fit, reliable solution. We are offering a thoroughly tested, used OEM Powertrain Control Module, part number 16250279 (interchangeable with 09355699 and others listed below). The most critical part of our service is that we professionally program the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures that the computer has the correct software and calibrations for your engine, transmission, and options, making installation as simple as possible.
From the Diagnostic Bay
We once had a ’99 Tahoe in the shop that was driving its owner crazy. The vehicle would randomly die while driving and sometimes refuse to start for hours. The owner had already replaced the fuel pump twice and the ignition control module, with no success. After hooking up our scanner, we noticed communication with the PCM was intermittent. We pulled the module and found tell-tale signs of internal corrosion on the board. Instead of another guessing game, we sourced a quality used module and programmed it to the Tahoe’s VIN. After a quick security relearn, the truck fired up instantly and the owner never had the problem again. It’s a classic case of the vehicle’s ‘brain’ failing, not its ‘heart’.
Symptoms of a Failing Powertrain Control Module
A failing PCM can manifest in various ways. If you’re experiencing any of the following, your engine computer could be the culprit:
- ✔ Check Engine Light: The light is on with codes related to PCM failure or communication errors (U-codes).
- ✔ No-Start Condition: The engine cranks but will not start, often due to the PCM not firing the injectors or coils.
- ✔ Intermittent Stalling: Your vehicle stalls unexpectedly while driving or at idle.
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation, or a sudden drop in fuel economy.
- ✔ Erratic Transmission Shifting: The transmission may shift harshly, slip between gears, or get stuck in one gear (limp mode).
- ✔ Failed Emissions Test: Inability to pass smog or emissions testing due to PCM-related faults.
The Simple, Cost-Effective Solution: A Programmed 1998-1999 Express 2500 PCM
Don’t let a faulty computer keep your reliable GM truck off the road. Dealerships often charge a fortune for a new module and the required programming. Our solution provides the same result at a fraction of the cost. By providing us with your VIN upon purchase, you receive a module that is ready to be installed in your vehicle. This unit has been carefully sourced and inspected to ensure functionality. After installation, a simple security relearn procedure is typically all that’s needed to get your vehicle running smoothly again.
Guaranteed Compatibility
This module is a direct replacement for several part numbers. If your original module has one of the following numbers, this unit is compatible:
09355699, 16266645, 9355699, 16250279, 16258815, 09366810, 9366810
This PCM fits a wide range of GM trucks and vans from 1998-1999. Please verify your vehicle is on the list below and that your original module carries one of the compatible part numbers.
Extensive Vehicle Fitment List:
This Electronic Control Module fits the following vehicles with matching ID 9355699:
- 1998-1999 Chevrolet & GMC 1500, 2500, & 3500 Pickups (Gasoline)
- 1998-1999 Chevrolet Suburban 1500 & 2500 (Gasoline)
- 1998-1999 Chevrolet Tahoe & GMC Yukon (Gasoline)
- 1998-1999 Chevrolet Express 1500, 2500, & 3500 Vans (Gasoline)
- 1998-1999 GMC Savana 1500, 2500, & 3500 Vans (Gasoline)
- 1999 Cadillac Escalade
- 1998 Chevrolet Astro & GMC Safari
- 1998 Oldsmobile Bravada
- 1998 GMC Envoy
- 1998 Isuzu Hombre (4.3L)
- 1998 Chevrolet S10 & GMC Sonoma (4.3L)
- 1998 Chevrolet S10 Blazer & GMC S15 Jimmy
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply reply to your order confirmation email with your 17-digit VIN. We cannot ship the module until we receive this information, as the programming is essential for it to work in your vehicle.
Is any additional programming required after installation?
No dealership programming is needed. However, you will need to perform a security relearn procedure, also known as a VATS relearn. This is a simple process that involves turning the key to the ‘ON’ position for about 10-15 minutes, then off, and repeating two more times. This allows the PCM to recognize your vehicle’s anti-theft system.
Is this a new computer?
No, this is a high-quality, tested, and fully functional used OEM part sourced from a salvaged vehicle. This allows us to offer a reliable solution at an affordable price.
My original part number is different, will this still work?
Yes, as long as your original part number is on our interchange list (e.g., 09355699, 16266645, etc.) and your vehicle is listed in the fitment guide, this module will function correctly once programmed to your VIN.
What tools are needed for installation?
Basic hand tools are all that’s required. Typically, you’ll need a socket set to disconnect the battery and unbolt the module’s mounting bracket and electrical connectors. The most important step is to disconnect the battery before starting work.