Is Your GM Truck or SUV Running Rough?
If you’re battling a persistent Check Engine light, experiencing sudden stalling, poor fuel economy, or erratic transmission shifting, the problem often lies deep within the vehicle’s central nervous system: the Powertrain Control Module. As the brain of your engine and transmission, a failing PCM can cause a host of frustrating issues that are difficult to diagnose. This isn’t just an inconvenience; it’s a matter of reliability. You need your vehicle to start every time and get you where you’re going without a fight. This replacement module is the definitive solution to restore your vehicle’s performance and your peace of mind.
Common Symptoms & Your Solution
A faulty PCM can manifest in numerous ways. If you’re experiencing any of the following, our pre-programmed module is your solution:
- Persistent Check Engine Light (CEL): Especially with codes related to internal module failure (e.g., P0601, P0605, P0606).
- Engine Stalling or No-Start: The engine may crank but refuse to start, or it may stall unexpectedly while driving.
- Poor Performance & Fuel Economy: A noticeable drop in power, hesitation during acceleration, and more frequent trips to the gas station.
- Erratic Shifting: The transmission may shift harshly, at the wrong times, or get stuck in one gear (limp mode).
- Failed Emissions Test: Incorrect fuel and air mixture control can lead to an automatic failure at the testing station.
This Programmed 16265035 PCM is engineered to be the direct, hassle-free fix for these problems. We take the guesswork and high dealership costs out of the equation by flashing the unit with the latest official GM software updates, tailored specifically to your vehicle’s VIN before it ever leaves our facility.
Features & Tangible Benefits
- ✔ VIN-Specific Programming Included: Your module arrives ready for installation. This eliminates the need for expensive scan tools or a costly trip to the dealership for programming, saving you time and money.
- ✔ Loaded with Latest GM Software: We flash the unit with the most current factory calibrations, which often correct drivability issues and improve efficiency beyond what your original module could offer.
- ✔ Direct-Fit OEM Functionality: Engineered to meet or exceed original equipment specifications, guaranteeing a perfect fit and seamless integration with your vehicle’s systems.
- ✔ Broad Model Compatibility: A single, reliable solution for a wide range of hardworking GM trucks, vans, and SUVs from the late 90s and early 2000s.
- ✔ Rigorously Inspected: Every module is subjected to thorough testing to ensure it is fully functional and ready to provide years of dependable service.
A Technician’s Note: The Case of the Phantom Stall
I once spent two days chasing a stalling issue on a ’99 Chevy Tahoe. It would only happen after it was fully warmed up, and it threw no codes. We checked fuel pressure, sensors, and wiring harnesses—everything looked perfect. The owner was frustrated and ready to sell the truck. On a hunch, we swapped in a known-good PCM. The problem vanished instantly. The original PCM had an internal fault that only appeared when it reached a specific temperature. A new Programmed 16265035 PCM would have saved hours of diagnostic headaches and provided an immediate, reliable fix.
Stop throwing parts at a problem and get to the root cause. By providing us with your VIN upon purchase, you are getting a component that is not just a replacement, but a complete, updated control unit for your vehicle’s powertrain. This is the most effective way to restore the performance and dependability you rely on every day. Our Programmed 16265035 PCM is the right choice for a lasting repair.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. We handle all the programming for you. When you receive the module, it has been flashed with the latest GM software using the VIN you provide, making it ready for installation right out of the box.
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 add it as a note to the seller during checkout or send us a direct message immediately after your order. We cannot ship your part until we have this information.
Will a security or CASE relearn be required after installation?
Yes, in most cases, you will need to perform a security relearn procedure (also known as Passlock or VATS relearn) to sync the new PCM with your vehicle’s anti-theft system. This is a simple procedure that typically takes 10-30 minutes and does not require special tools. A Crankshaft Variation (CASE) relearn may also be needed to prevent a P1336 code, which requires a compatible scan tool.
What if my original part number is different from 16265035?
This module is compatible with a range of part numbers, including 16263494 and 8162634940. As long as your vehicle is on our compatibility list and you provide the correct VIN, we will ensure the software loaded onto the module is a perfect match for your vehicle’s specific configuration.
Will this module fix my check engine light?
This module will correct any issues originating from an internal fault within the PCM itself. If your check engine light is caused by a faulty sensor, wiring issue, or mechanical problem elsewhere on the vehicle, you will still need to address those separate issues. Proper diagnosis is always recommended.