Is your dependable GM truck or van suddenly running rough, stalling, or showing a persistent Check Engine Light? A failing Powertrain Control Module (PCM) is often the culprit, acting like a broken brain for your engine. Don’t let a faulty computer keep you off the road. This replacement PCM is the reliable, straightforward solution to restore your vehicle’s performance and get it running like it should.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of frustrating issues. If you’re experiencing any of the following, this module is your fix:
- Check Engine Light (CEL) with Diagnostic Trouble Codes (DTCs) like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- Erratic or Harsh Shifting: The PCM controls transmission behavior, and a fault can lead to poor shift quality.
- Poor Fuel Economy: Incorrect fuel and air mixture calculations can drastically reduce your MPG.
- Engine Stalling or No-Start Condition: The most critical failure, leaving you stranded.
- Rough Idling or Misfiring: Inconsistent signals can disrupt the engine’s smooth operation.
This isn’t just a replacement part; it’s a complete solution. We flash this programmed 16263494 PCM with the latest GM-certified software, tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This ensures all systems communicate correctly, from the engine and transmission to the fuel and emissions controls, restoring the dependable operation you rely on.
Features & Benefits
- ✔ Plug & Play Installation: Arrives pre-programmed to your specific VIN. No expensive trips to the dealership for flashing are required.
- ✔ Updated GM Software: We load the newest calibrations from General Motors, which can solve factory bugs and improve overall performance and efficiency.
- ✔ Direct-Fit Replacement: Guaranteed compatibility with service number 16263494 and other part numbers listed, ensuring a perfect physical fit.
- ✔ Restores Peak Performance: Corrects issues with fuel delivery, spark timing, and transmission shifting for a smoother, more responsive drive.
- ✔ Cost-Effective Solution: Get your truck or van fixed without the high cost and hassle of sourcing and programming a module through a dealer.
Expert Insight: More Than Just an Engine Fix
As a mechanic who has worked on hundreds of these GMT400 and GMT800 platform trucks, I can tell you that a correctly programmed 16263494 PCM is critical for more than just the engine. It’s the heart of the vehicle’s entire powertrain communication network. A common complaint on these models is poor transmission performance or what feels like a slipping 4L60E or 4L80E transmission. Before you condemn the transmission, always check the PCM. A failing module can send incorrect signals for line pressure and shift points, mimicking a mechanical failure. Installing a properly flashed module often solves these phantom transmission problems, saving you thousands in unnecessary repairs.
Frequently Asked Questions
Do I need to do any programming myself?
No. This module arrives fully programmed to the VIN you provide after your purchase. In most cases, it is a plug-and-play installation. Some vehicles may require a simple security relearn procedure, which can be done without special tools and takes about 30 minutes. Instructions are readily available online for this process.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is specific to your vehicle.
What if my original part number is different from 16263494?
This module is a direct replacement for several part numbers, including 16265035 and 8162634940. Please check the extensive compatibility list on this page. As long as your vehicle and original part number are listed, this module will work correctly once programmed to your VIN.
Will this fix my vehicle’s anti-theft or security system issue?
This module will restore the function of the powertrain control system. If your vehicle has a Passlock or other security system, you may need to perform a security relearn procedure after installation to sync the new PCM with your vehicle’s keys and Body Control Module. This is a standard step when replacing this component.
Where is this module located on my vehicle?
The location varies slightly by model. On most pickups and SUVs like the Tahoe and Silverado, it’s on the driver’s side of the engine compartment, near the battery or firewall. On Express and Savana vans, it’s typically in the rear of the engine compartment on the driver’s side.
Take the guesswork out of your repair. By ordering a pre-flashed unit, you’re getting a reliable part that’s ready to work as soon as you install it. Get your work truck, van, or SUV back in service with this quality programmed 16263494 PCM.