Get Your GM Workhorse Running Strong Again
Is your trusty 1998-1999 GM truck, van, or SUV suffering from frustrating engine or transmission issues? A faulty Powertrain Control Module (PCM) is often the hidden culprit behind problems that can sideline your vehicle. This direct-fit replacement 16250279 PCM is the definitive solution to restore the reliable performance you depend on. We take the guesswork out of the repair by programming the module specifically to your vehicle’s VIN with the latest GM software updates, ensuring a seamless, plug-and-play installation.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely cause. This module is engineered to correct these exact issues:
- Persistent Check Engine Light: Especially with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0605, or P0606.
- Erratic Transmission Shifting: Hard shifts, delayed engagement, or getting stuck in gear.
- Poor Engine Performance: Rough idling, stalling, hesitation, or a sudden drop in fuel economy.
- No-Start Condition: The engine cranks but won’t start, often with no spark or fuel injector pulse.
- Communication Failures: Your scan tool is unable to communicate with the PCM.
Features & Tangible Benefits
- โ VIN-Specific Programming: We flash the module to your exact Vehicle Identification Number, guaranteeing it works perfectly with your vehicle’s specific options and systems right out of the box.
- โ Updated GM Software: Your new PCM arrives with the newest factory software, which can improve fuel efficiency, emissions, and transmission shift points over your old, outdated unit.
- โ Plug-and-Play Installation: No need for an expensive trip to the dealership. Once you receive the module, you can install it yourself, saving time and money.
- โ Broad Compatibility: This unit is a direct replacement for part numbers 16250279, 09366810, and 09355699, eliminating any confusion during your parts search.
- โ This unit is backed by our one-year replacement warranty. Purchase with confidence knowing your investment is protected.
An Expert’s Take on Keeping a Classic on the Road
As a technician with over two decades of experience, I’ve seen countless late-90s GM trucks with over 300,000 miles still running strong. Their Vortec engines are legendary for a reason. However, the original electronics from that era are their Achilles’ heel. Heat cycles and age cause internal components in the PCM to fail, leading to phantom issues that are a nightmare to diagnose. Replacing the module isn’t just a repair; it’s a vital step in preserving the life of these incredible vehicles. This pre-programmed 16250279 PCM is the most reliable and cost-effective way to give your truck or SUV a new lease on life.
Frequently Asked Questions
How do I provide my VIN?
After you complete your purchase, you will receive instructions to reply with your 17-digit Vehicle Identification Number (VIN). We must have your VIN to program the module before we can ship it.
Is this a difficult part to install?
For most of the listed GM trucks and vans, the PCM is located in the engine bay and is held in by a few bolts with electrical connectors. It is a straightforward installation for someone with basic mechanical skills. Always disconnect the battery before beginning the replacement.
Will I need to do anything after installation?
In some cases, a security relearn procedure or a Crankshaft Variation Relearn (CASE Relearn) may be necessary. These procedures can often be done without special tools, and instructions are widely available online for your specific model.
Is this the correct part for my vehicle?
Please check the extensive fitment list provided on this page. The most important step is to match the part number on your original module to 16250279 PCM or one of the alternate numbers (09366810, 09355699). If you are unsure, please contact us with your VIN before ordering.
Do I need to send my old part back?
No core charge or return is required for this module. You can keep or recycle your old part.