Restore Peak Performance to Your GM Truck or SUV
Is your 1998 or 1999 Chevrolet Tahoe, Suburban, or GMC Yukon running rough, shifting erratically, or failing to start? These are classic signs of a failing Powertrain Control Module (PCM). The PCM is the electronic brain of your vehicle, managing everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it falters, the entire vehicle’s performance suffers. This genuine used PCM, part number 9366810, is the reliable and cost-effective solution to get your truck back on the road with confidence.
Expert Pro Tip
Before installing your new PCM, always disconnect the vehicle’s battery for at least 15 minutes. This clears any stored fault codes in other modules and ensures the vehicle’s systems properly recognize the new computer upon startup. Re-connect the battery only after the new PCM is fully installed and all connectors are securely fastened.
The Simple, Plug-and-Play Solution
Don’t waste time and money at the dealership. We take the guesswork out of the repair process. This isn’t just a part in a box; it’s a complete solution. Upon purchase, simply provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will then program the module with the latest GM-certified software specific to your vehicle’s configuration. This ensures that it communicates flawlessly with your engine, transmission, and all other onboard systems right out of the box. No expensive programming tools or trips to a mechanic are required for software setup.
Diagnosing a Faulty 1998-1999 Tahoe PCM
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’ve checked your sensors and wiring but are still facing persistent issues, the PCM is a likely culprit. This 1998-1999 Tahoe PCM is the central command unit, and its failure can cause a cascade of problems across the vehicle.
Is Your GM Vehicle Experiencing These Symptoms?
- ✔️ Check Engine Light is illuminated with communication-related error codes (e.g., U-codes).
- ✔️ Harsh or erratic automatic transmission shifting.
- ✔️ Engine cranks but refuses to start.
- ✔️ Unexplained stalling or stumbling while driving.
- ✔️ Significant decrease in fuel economy.
- ✔️ Misfire codes that persist even after replacing spark plugs, wires, and coils.
- ✔️ The anti-theft or security light stays on, preventing the engine from starting.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM trucks and vans from the late 90s. It is compatible with multiple service numbers, ensuring a perfect match. This unit will fit vehicles requiring part numbers: 09355699, 16266645, 9355699, 16250279, 16258815, and 09366810. Please verify the part number on your original module or consult the detailed fitment list below to confirm compatibility with your specific make, model, and engine.
Detailed Vehicle Fitment List:
This module fits a wide variety of GM models, including the Chevrolet Tahoe, Suburban, C/K Pickups, Express Van, Astro, S10, Blazer, and their GMC counterparts like the Yukon, Savana, Safari, Sonoma, and Jimmy, as well as the Cadillac Escalade, Oldsmobile Bravada, and Isuzu Hombre. Please ensure your vehicle’s original module ID is 9355699 for a guaranteed match.
Frequently Asked Questions
Do I need to do any programming myself?
No. This 1998-1999 Tahoe PCM comes fully programmed to your vehicle’s specific VIN. You just need to provide us with your VIN after purchase, and we handle all the software flashing before it ships. It will be ready for installation upon arrival.
Is any additional security relearn procedure required after installation?
In many cases for these specific model years, a simple security relearn procedure may be necessary. This can typically be done without special tools and involves a sequence of key turns. Instructions are readily available online or we can help guide you. It’s a simple process that takes about 30 minutes.
Is this a new part?
This is a high-quality, genuine used OEM part sourced from a salvaged vehicle. Each unit is thoroughly inspected and tested to ensure it is fully functional before being programmed and shipped.
How do I provide my VIN?
After completing your purchase, you can send us a message with your 17-digit VIN. You can find your VIN on your vehicle’s dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What if my original part number is not listed?
The primary ID for this computer is 9355699. While it replaces several part numbers, it’s crucial to match this ID for proper function. If your part number is different, please contact us before ordering to ensure we can provide the correct module for your vehicle.