Is your trusted GM truck or van suffering from frustrating engine problems? A faulty Powertrain Control Module (PCM) can cause everything from a persistent Check Engine Light to a no-start condition, leaving your reliable workhorse sitting on the sidelines. Restore your vehicle’s performance and dependability with this direct-fit, professionally programmed engine computer. This isn’t just a replacement part; it’s a complete solution designed to get you back on the road with confidence.
We take the guesswork and complexity out of the repair. Before this module ships, we flash it with the latest official GM software updates, precisely calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This ensures seamless communication between components and restores the original factory performance and efficiency your truck was built for. Stop chasing symptoms and install the definitive solution for a smooth-running engine.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, a failing PCM is a likely culprit. This programmed unit is designed to correct these problems:
- Persistent Check Engine Light (CEL)
- Engine diagnostic trouble codes (DTCs) like P0601, P0605, or P0606
- Rough or erratic idling
- Vehicle stalling unexpectedly
- Noticeable decrease in fuel economy
- Failure to pass emissions testing
- No communication with diagnostic scan tools
- Harsh or incorrect transmission shifting
By installing this pre-programmed 1999 GMC 1500 PCM 09355699, you are addressing the root cause, not just the symptoms, ensuring a lasting and reliable repair.
Features & Benefits
- โ Plug & Drive Installation: Arrives fully programmed to your VIN. No expensive dealer programming required.
- โ Updated GM Software: Flashed with the newest factory calibrations for optimal engine performance and fuel efficiency.
- โ Guaranteed Compatibility: A direct replacement for part numbers 16250279, 09366810, and 09355699.
- โ Restores Original Performance: Solves common drivability issues like rough idle, stalling, and poor mileage.
- โ Rigorously Inspected: Each module is thoroughly checked to ensure it meets strict quality and performance standards.
- โ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
For vehicles like the GMT400 and GMT800 series trucks and vans, the PCM is the undisputed brain of the operation. Simply swapping a used computer from another vehicle often creates more problems than it solves due to mismatched calibrations for the engine, transmission, and emissions equipment. Our VIN-specific programming service is critical. We ensure the 1999 GMC 1500 PCM 09355699 you receive is loaded with the correct, most current software from GM, directly addressing any bugs or drivability concerns that may have been discovered since your truck first rolled off the assembly line. This is the key to a successful, long-term repair.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. This module is sold as a plug-and-drive solution. We program it using the VIN you provide, so it’s ready for installation right out of the box. In some cases, a security or crank relearn procedure may be necessary, which can be done with a capable scan tool or by a qualified mechanic.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship the module until we have this information to perform the programming service.
How do I know if this is the right part for my vehicle?
Please check the extensive fitment list on this page and verify that your vehicle’s original module has one of the compatible part numbers listed (16250279, 09366810, 09355699). Matching the part number is the most reliable way to ensure compatibility for your specific application.
What if my original part number is not on the list?
If your part number is different, please contact us before ordering. We can help you verify compatibility or find the correct module for your vehicle to ensure you get the right part the first time.
What is the warranty on this PCM?
This unit is backed by our one-year replacement warranty. This gives you confidence and protection for your purchase.
Don’t let a faulty computer keep your truck down. Order your programmed 1999 GMC 1500 PCM 09355699 today and restore the dependable performance you rely on.