Is Your 1998-1999 GM Truck or SUV Running Rough?
If you’re dealing with erratic engine behavior, poor fuel economy, harsh shifting, or a frustrating no-start condition in your Suburban, Tahoe, or C/K Pickup, the root cause is often a failing Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it begins to fail, it can create a cascade of problems that are difficult to diagnose and can leave you stranded.
Symptoms of a Failing Powertrain Control Module
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following issues, it’s a strong indicator that your vehicle’s main computer needs attention:
- ✔ Check Engine Light is illuminated with various trouble codes (DTCs).
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel mileage.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle fails to start, even with a good battery and starter.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
The Direct Solution: A VIN-Programmed 1998-1999 Suburban PCM
Don’t let a faulty computer keep your reliable GM truck off the road. This Powertrain Control Module is the definitive solution to restore your vehicle’s performance and dependability. We take the guesswork out of the repair by pre-programming the module specifically for your vehicle using your VIN. This process ensures that the unit arrives with the latest GM software updates, addressing many of the original factory drivability issues and optimizing performance. It’s a direct-fit replacement for part number 16250279 and its alternatives, ensuring a seamless installation process.
Simply provide your vehicle’s VIN at checkout, and our technicians will handle the complex programming. Once you receive the module, installation is straightforward. In most cases, a security relearn procedure (often called a Passlock or VATS relearn) is required, which can typically be done in your driveway without special tools. This step syncs the new PCM with your vehicle’s anti-theft system. Restoring your truck’s brain has never been easier.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for service numbers 16250279, 09366810, and 09355699. It is confirmed to fit the following vehicles:
- 1999 Cadillac Escalade
- 1998-1999 Chevrolet & GMC C/K 1500, 2500, 3500 Pickups (Gasoline)
- 1998-1999 Chevrolet & GMC Suburban 1500, 2500 (Gasoline)
- 1998-1999 Chevrolet Tahoe & GMC Yukon (Gasoline)
- 1998-1999 Chevrolet Astro & GMC Safari
- 1998 Chevrolet S10 Blazer & GMC S15 Jimmy (4.3L)
- 1998 Oldsmobile Bravada (4.3L)
- 1998 Chevrolet Express & GMC Savana 1500, 2500, 3500 Vans (Gasoline)
- 1998 GMC Envoy
- 1998 Isuzu Hombre (4.3L)
- 1998 Chevrolet S10 & GMC Sonoma (4.3L)
Please verify your original part number to ensure compatibility.
Frequently Asked Questions
Why is my VIN required for this part?
Your Vehicle Identification Number (VIN) contains specific information about your truck’s engine, transmission, axle ratio, and emissions equipment. We use the VIN to load the exact GM-certified software and calibrations for your vehicle, ensuring perfect compatibility and performance right out of the box.
Is this module difficult to install?
The physical installation is straightforward, typically involving disconnecting the battery and swapping the module. After installation, you will need to perform a security relearn procedure to sync the new PCM with your vehicle’s anti-theft system. This procedure can usually be done without any special tools and instructions are widely available online.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM, then yes, this part will resolve the issue. However, it’s crucial to ensure that the codes are not being caused by a faulty sensor or wiring problem elsewhere in the vehicle.
What are the compatible part numbers for this PCM?
This module is a direct replacement for GM service numbers 16250279, 09366810, and 09355699. If your original module has one of these numbers, this part is a guaranteed match.
Where is the PCM located on a 1999 Suburban?
On most 1998-1999 GM full-size trucks and SUVs like the Suburban, Tahoe, and C/K pickups, the PCM is located in the engine compartment on the driver’s side, near the firewall or inner fender.