Restore Peak Performance to Your GM Truck or Van
Is your dependable GMC 1500 suddenly plagued with a persistent Check Engine Light, poor fuel economy, or erratic engine behavior? A failing Powertrain Control Module (PCM) is often the root cause, acting like a faulty brain for your vehicle’s most critical systems. This can lead to frustrating drivability issues that sideline your truck when you need it most. This replacement PCM is the definitive, hassle-free solution to restore your vehicle’s original performance and reliability. It arrives fully programmed to your specific Vehicle Identification Number (VIN) with the latest GM software updates, making installation straightforward and effective.
Common Symptoms & Your Solution
A failing PCM can manifest in various ways. If you’re experiencing any of the following, it’s a strong indicator that your engine computer needs replacement:
- Persistent Check Engine Light (CEL) with communication-related DTCs
- Engine stalling, stumbling, or rough idling
- Noticeable decrease in fuel efficiency
- Harsh or unpredictable automatic transmission shifting
- Vehicle fails to start intermittently or at all
- Failed emissions testing
Installing this professionally prepared and programmed 1999 GMC 1500 PCM directly addresses these issues, correcting the faulty logic and component commands to get your vehicle operating smoothly again.
Features & Tangible Benefits
- ✔ VIN-Specific Programming Included: We flash the module with your vehicle’s exact VIN and the newest GM software. This ensures perfect compatibility and eliminates the need for an expensive trip to the dealership for programming.
- ✔ Plug-and-Play Installation: Once you receive the module, installation is as simple as disconnecting the old unit and connecting this one. In most cases, a simple security relearn procedure is all that’s needed to get you back on the road.
- ✔ Restores Original Operation: This module corrects issues with fuel mixture, ignition timing, and transmission shift points, bringing back the smooth and efficient performance you expect from your truck.
- ✔ Broad Compatibility: A direct replacement for multiple OEM part numbers including 16263494, 16265035, and 8162634940, ensuring a perfect fit for a wide range of GM trucks, vans, and SUVs.
- ✔ Rigorously Tested for Reliability: Every module undergoes comprehensive testing on a live vehicle simulator to guarantee all circuits and processors are functioning correctly before it ships to you.
Expert Insight: The Power of a Proper Flash
As a technician with over 20 years of experience, I’ve seen countless issues arise from improperly matched control modules. On these late 90s/early 2000s GM vehicles, the PCM controls everything from the fuel injectors to the transmission. Using a generic or junkyard module without the correct VIN-specific software can cause a host of new problems. Our process ensures your new programmed 1999 GMC 1500 PCM contains the exact software calibration for your truck’s engine, transmission, and factory options, making it a true ‘get it right the first time’ repair.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, simply reply to your order confirmation email with your 17-digit VIN. You can also add it to the ‘notes’ section during checkout. We cannot ship your part until we have this information.
Is any additional programming required after installation?
No additional programming is required. However, you will likely need to perform a simple security relearn procedure, also known as a CASE relearn. This can typically be done without special tools and instructions are readily available online or can be provided upon request.
Will this fix my specific problem?
This module will correct any issue directly caused by a faulty PCM. While it solves a wide range of problems, it’s essential to ensure your vehicle’s wiring, sensors, and other mechanical components are in good working order. Proper diagnosis is key to any successful repair.
What part numbers does this module replace?
This module is a direct replacement for the following part numbers: 16263494, 16265035, 8162634940, 218-11787, and 21811787. Please check the number on your original module to confirm compatibility.
Is this a brand new part?
This is an original equipment module that has been expertly inspected, tested, and prepared for your vehicle. We ensure it meets or exceeds original factory specifications for performance and reliability before programming it for your specific VIN.
By purchasing this programmed 1999 GMC 1500 PCM, you are not just buying a part; you are investing in a reliable, long-term solution to get your trusted vehicle back in service.