Get Your Truck Back to Peak Performance
Is your trusty Chevy or GMC truck running rough, stalling unexpectedly, or showing a persistent check engine light? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these frustrating and hard-to-diagnose issues. This isn’t just an inconvenience; it affects your truck’s reliability, fuel economy, and safety. It’s time to stop guessing and install a solution that gets you back on the road with confidence. This genuine OEM computer is the brain of your vehicle, and we provide a fully programmed, plug-and-play replacement to restore the dependable performance you rely on.
Common Symptoms of a Failing PCM & Your Solution
If you’re experiencing any of the following, a faulty computer could be to blame. Common diagnostic trouble codes (DTCs) like P0601, P0605, or P0606 often point directly to an internal module failure. This Programmed 1998-1999 Chevy 2500 PCM is the definitive solution for problems such as:
- Erratic engine performance, including rough idling or misfires
- Sudden stalling or difficulty starting the engine
- Poor fuel mileage and sluggish acceleration
- Harsh or incorrect automatic transmission shifting
- Failure to pass state emissions testing
- A persistent Check Engine Light that won’t clear
Features & Benefits
- ✔ Plug & Play Installation: This module arrives programmed to your vehicle’s specific VIN. No expensive dealer trips or special tools are required for setup. Simply install the unit and you’re ready to go.
- ✔ Genuine OEM Reliability: Sourced from a salvaged vehicle, this is an original factory part, ensuring perfect fitment and seamless communication with your truck’s existing systems.
- ✔ Latest GM Software Updates: We flash the unit with the newest stable software available from General Motors for your vehicle, providing potential improvements in performance and efficiency over your old, outdated programming.
- ✔ Cost-Effective & Dependable Repair: Get your truck back on the road without the extreme cost of a new computer from a dealer. This is a smart, economical choice for a lasting fix.
- ✔ Broad Compatibility: This single unit is a direct replacement for multiple part numbers, including 09355699, 16266645, 16250279, and more, covering a wide range of GM trucks, vans, and SUVs.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty, giving you complete confidence and peace of mind in your purchase.
Expert Insight: The Heart of Your Late 90s GM Truck
The 1998-1999 GM truck platform, with its venerable Vortec engines, is legendary for its durability. However, after 20+ years of heat cycles, vibrations, and voltage fluctuations, the original PCM can begin to fail. The capacitors and internal solder joints are common points of failure. The biggest hurdle for a DIYer or independent shop has always been the required programming. Our service completely eliminates that obstacle. By providing a properly tested, genuine OEM Programmed 1998-1999 Chevy 2500 PCM, we give you the power to perform a professional-level repair right in your own driveway, saving you hundreds of dollars in dealer fees and diagnostic time.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. The main benefit of our service is that we handle all the programming for you. After you purchase, you provide us with your vehicle’s VIN, and we flash the computer with the correct software before it ships. It will arrive ready to install.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically reply to your order confirmation email or send it through the website’s contact form with your order number. We cannot ship your part until we receive your VIN.
Is this a new part?
No, this is a used, genuine OEM computer that was carefully removed from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped. This provides OEM quality at a fraction of the cost.
My original part number is different. Will this still work?
Yes, as long as your vehicle’s year, make, and model are on the compatibility list, this part will work. This computer, service number 09366810, is a direct, interchangeable replacement for several other part numbers like 09355699 and 16266645.
Will this fix my specific problem or check engine light?
This module will correct any issues directly caused by a failing PCM. While it solves a wide range of common problems, we always recommend a proper diagnosis to confirm the PCM is the root cause, as other faulty sensors or wiring could cause similar symptoms. A new Programmed 1998-1999 Chevy 2500 PCM is often the final piece of the puzzle.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty. If you experience any issues with the module within one year of purchase, we will provide a replacement. Please see our full warranty policy for details.