Is Your Trusted GM Truck Running Out of Steam?
If your 1998-1999 GM truck or SUV is suffering from a persistent check engine light, erratic shifting, poor fuel economy, or a frustrating no-start condition, the problem often lies with a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, its health is critical to your vehicle’s performance and reliability. Don’t let a faulty computer sideline the truck you depend on. This is your direct, hassle-free solution to get it running strong again.
Common Symptoms & Your Direct-Fit Solution
A failing PCM can cause a wide range of confusing issues. You might be experiencing one or more of the following:
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs), such as P0601, P0605, or P0606.
- Engine Stalling or Misfiring for no apparent reason.
- Harsh or Failed Shifting as the PCM struggles to communicate with the transmission.
- Drastic Decrease in Fuel Mileage due to incorrect fuel and timing calculations.
- Vehicle Won’t Start even with a good battery and starter.
This replacement Powertrain Control Module is the definitive fix for these problems. We take the guesswork and complexity out of the repair by pre-programming the unit specifically for your vehicle using the VIN you provide. This means no expensive trips to the dealership for programmingโit arrives ready for installation, making it the ideal solution for the savvy DIYer or independent repair shop looking for a reliable 1999 Chevy Tahoe PCM or a module for a compatible GM model.
Features & Tangible Benefits
- โ VIN-Programmed for Your Vehicle: Arrives ready to install, eliminating the need for dealership programming. This saves you time, money, and the headache of towing your vehicle.
- โ Loaded with the Latest GM Software: We flash the module with the most current GM updates, ensuring optimal performance, fuel efficiency, and emissions control.
- โ Direct-Fit OEM Replacement: Engineered to match the original form and function of part numbers 09366810, 16250279, and 09355699 for a perfect installation.
- โ Restores Peak Performance: By correcting engine and transmission commands, this module restores the smooth power delivery and crisp shifting you expect from your truck.
- โ Backed by Our One-Year Replacement Warranty: Drive with confidence knowing your purchase is protected.
An Expert’s Note: The “No-Comm” Nightmare Solved.
We recently worked with a customer who owned a ’99 Suburban used for towing his family’s camper. The truck would randomly stall and refuse to communicate with his scan tool. His local shop quoted him a massive bill, suspecting a wiring harness issue. He decided to try replacing the PCM first. After installing our pre-programmed unit, the truck fired up instantly, the scan tool connected, and all the issues were gone. He saved over a thousand dollars and, more importantly, saved his family’s camping trip. A faulty 1999 Chevy Tahoe PCM or a related module can mimic a dozen other expensive problems, but often, the solution is this simple.
Frequently Asked Questions
Is this part truly plug-and-play?
Yes. Because we program the module to your vehicle’s specific VIN before shipping, it is ready for installation right out of the box. In most cases, no additional programming is required. Some vehicles may require a security relearn procedure, which is a simple process that can be done without special tools and instructions can be provided.
Where is the PCM located on my 1999 Tahoe?
On most GMT400 platform trucks and SUVs like the 1998-1999 Tahoe, Yukon, and C/K Pickups, the PCM is located in the engine bay on the driver’s side, often near the battery or on the inner fender.
How do I provide my VIN number?
After you complete your purchase, you will need to send us a message with your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information, as it is essential for programming the module correctly.
Will this fix my failed emissions test?
In many cases, yes. A faulty PCM can cause incorrect air/fuel ratios and other issues that lead to failed emissions tests. Installing a correctly programmed, functioning 1999 Chevy Tahoe PCM often resolves these underlying problems and allows the vehicle to pass.
Do I need to send my old PCM (core) back?
No core charge or return is required for this particular module. You can keep or recycle your old part at your convenience.