Restore Peak Performance to Your GM Truck or SUV
Is your trusty GM truck, van, or SUV suddenly running rough, refusing to start, or showing a persistent check engine light? A failing Powertrain Control Module (PCM) is often the culprit behind these frustrating and unpredictable issues. This direct-fit replacement module, service number 16250279, is the definitive solution to get your vehicle back on the road, running with the reliability you depend on. We take the guesswork out of the repair by programming the module to your vehicle’s unique VIN before it ships, making installation straightforward.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty PCM is the likely cause. This pre-programmed module is designed to correct these exact problems:
- Erratic or harsh automatic transmission shifting
- Sudden engine stalling or stumbling
- Complete no-start condition with power to all other systems
- Poor fuel economy and loss of power
- Check Engine Light with Diagnostic Trouble Codes (DTCs) like P0601, P0605, or other communication errors
Installing our Programmed 16250279 PCM is the most effective way to permanently resolve these issues and restore your vehicle’s original performance and dependability.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: No need for an expensive trip to the dealership. This module arrives ready to install, pre-flashed with your vehicle’s specific information.
- โ Loaded with Latest GM Software: We flash each unit with the most current GM updates, ensuring optimal engine performance, fuel efficiency, and transmission function.
- โ Restores Dependable Operation: Eliminates frustrating issues caused by a failing computer, giving you confidence and peace of mind on the road.
- โ Direct-Fit Replacement: Guaranteed to fit and function perfectly in a wide range of 1998-1999 GM trucks, vans, and SUVs. Please verify your part number and check the fitment list.
- โ Backed by a Solid Warranty: This unit is backed by our one-year replacement warranty.
An Expert’s Insight on PCM Failure
As a technician with over two decades of experience, I’ve seen hundreds of these late-90s GM vehicles. Their PCMs are generally robust, but after 20+ years of heat cycles and vibrations, internal components like capacitors and processors can fail. This often leads to intermittent problems that are a nightmare to diagnose. A common failure we see is a breakdown in communication with the transmission, causing harsh shifts that can lead to premature wear. Installing a quality, correctly Programmed 16250279 PCM not only fixes the immediate problem but also protects other vital components, like your transmission, from collateral damage.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will provide clear instructions on how to do this. We cannot ship your part until we receive the VIN, as this step is essential for a successful installation.
Is any additional programming required after installation?
No, the core engine and transmission programming is complete. However, on most of these GM vehicles, you will need to perform a simple security relearn procedure (often called a CASE relearn or Passlock relearn). This procedure can be done without special tools and typically involves a series of key cycles. We can provide instructions for this process.
Where is the PCM located on my vehicle?
The location varies slightly by model. On most full-size trucks and SUVs (like the Silverado, Tahoe, Yukon), it’s in the engine compartment on the driver’s side fender. On vans (Astro, Express) and S-series trucks (Blazer, S10), it’s often on the passenger side fender or near the battery. Always disconnect the battery before attempting removal or installation.
How do I know for sure that my PCM is the problem?
While the symptoms listed are strong indicators, it’s always best to have a proper diagnosis performed. Common PCM failure codes like P0601 (Internal Control Module Memory Check Sum Error) are a definitive sign. If you’re experiencing multiple, unrelated error codes or intermittent electrical issues that can’t be traced to a specific sensor, the PCM is a very likely culprit.
Will this fix my check engine light?
Yes, if the check engine light is caused by an internal failure of the PCM itself. This module is the direct solution for codes related to the computer’s processor, memory, or internal circuits. If the light is on due to a faulty sensor (like an O2 sensor or MAP sensor), that part will still need to be replaced separately.