Is Your GM Truck or Van Suddenly Unreliable?
There’s nothing more frustrating than a vehicle you depend on suddenly stalling, refusing to start, or running rough for no apparent reason. If your late-90s Chevy or GMC is throwing confusing error codes, shifting erratically, or has simply given up, a failing Powertrain Control Module (PCM) is often the culprit. Don’t let a faulty computer keep your workhorse off the road. This is the direct, reliable solution to restore your vehicle’s performance and dependability.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of issues that can be difficult to diagnose. If you’re experiencing any of the following, this pre-programmed engine computer is the fix you need:
- Complete no-start or intermittent starting problems
- Stalling while driving or rough, inconsistent idle
- Poor fuel economy and loss of power
- Check Engine Light with communication error codes (e.g., U-codes)
- False sensor codes that return even after replacing the sensor
- Harsh or erratic automatic transmission shifting
This Programmed 09366810 PCM is meticulously flashed with the latest official GM software updates, tailored specifically to your vehicle’s VIN. This ensures perfect compatibility and function right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Features & Real-World Benefits
- โ VIN-Specific Programming Included: We flash the module to your exact VIN before shipping, ensuring it’s a true plug-and-play solution for your vehicle.
- โ Latest GM Software Updates: Your PCM arrives with the most current calibrations from General Motors, which can resolve factory bugs and improve engine and transmission performance.
- โ Restored Drivability: By replacing the faulty brain of your engine, you’ll restore smooth idling, crisp throttle response, and proper transmission shift points.
- โ Cost-Effective Repair: Avoid the high costs and scheduling hassles of a dealership visit. This is a straightforward repair for a confident DIYer or any professional mechanic.
- โ Wide Compatibility: This unit is a direct replacement for multiple service numbers, including 16250279 and 09355699, across a huge range of popular GM trucks, vans, and SUVs.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The ‘Black Box’ Vortec PCM
The PCM used in these 1998-1999 GM vehicles, often called the ‘Black Box’ PCM, is the central command for everything from fuel injection and spark timing to transmission control and the anti-theft system (VATS/Passlock). When it fails, the entire vehicle goes down. Simply swapping in a used module from a junkyard won’t work because it isn’t programmed for your vehicle’s specific options, engine, transmission, and security key. Our service of pre-programming this Programmed 09366810 PCM to your VIN is what makes this a successful and reliable repair, ensuring all systems communicate correctly from the moment you turn the key.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you will receive instructions to reply with your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your vehicle.
Will I need to do any additional programming after installation?
No dealer programming is required. However, on some models, you may need to perform a simple security relearn procedure which involves a sequence of key turns. This procedure can be done in your driveway and instructions are widely available online.
Is this the right part for my vehicle?
This module replaces several part numbers, including 09366810, 16250279, and 09355699. Please check the extensive fitment list on this page and verify that the part number on your original module is a match. If you are unsure, please contact us with your VIN for confirmation.
Do I need to send my old computer back?
No. There is no core charge or requirement to return your old, faulty module. You can keep it or dispose of it as you see fit.
What if my truck has performance modifications?
This Programmed 09366810 PCM is flashed with standard, stock GM calibrations. It is intended for use on vehicles with original factory equipment and is not designed to account for significant aftermarket modifications like different engine internals, forced induction, or non-stock fuel injectors.