Is Your GM Truck or SUV Acting Up?
If you’re driving a late 90s or early 2000s GM vehicle like a Blazer, Jimmy, S10, or one of the many others listed below, you might be dealing with some incredibly frustrating issues. Maybe it’s a harsh 1-2 shift that feels like you’ve been rear-ended. Perhaps it’s an intermittent no-start condition that leaves you stranded without warning. Or it could be a persistent Check Engine Light with codes that just won’t go away, no matter what sensors you replace. These are the classic signs of a failing Powertrain Control Module (PCM).
A Technician’s Real-World Experience
“A customer’s ’99 GMC Jimmy came in last week with these exact symptoms. The transmission was shifting erratically, and it would occasionally refuse to start, but only after it was warm. The owner had already replaced the ignition switch and the crankshaft position sensor based on forum advice, but the problem persisted. After hooking up my scan tool and seeing erratic data from multiple sensors simultaneously, my experience pointed straight to the PCM. The internal voltage regulation circuits on these modules are a known failure point after 20+ years of heat cycles. We installed one of our pre-programmed modules, performed the security relearn, and the Jimmy was running and shifting like new. It’s a fix I’ve performed hundreds of times on these exact platforms.”
The Brain of Your Engine and Transmission
The PCM is the central computer responsible for managing everything from fuel injection and ignition timing to transmission shift points and torque converter lockup. When it starts to fail, it can create a cascade of bizarre symptoms that often mimic other component failures, leading to wasted time and money on incorrect repairs. Internal circuit board corrosion, cracked solder joints, or failed processors are common culprits.
Your Direct, Programmed Solution
This Powertrain Control Module is the definitive solution to restore your vehicle’s performance and reliability. It’s not just a generic, off-the-shelf part. We take the guesswork out of the repair by programming the module specifically for your vehicle using your unique 17-digit Vehicle Identification Number (VIN). This is a critical step that many sellers skip.
- โ VIN-Specific Programming: We flash the module with the latest, most stable software updates directly from GM. This ensures perfect compatibility with your engine, transmission, and options package.
- โ Restores Original Function: A correctly programmed PCM will fix issues like poor fuel economy, erratic shifting, stalling, and false diagnostic trouble codes (DTCs).
- โ No Dealer Visit Required: Your module arrives ready for installation. Once installed, you will only need to perform a simple security relearn procedure (often called VATS or Passlock relearn), which can be done in your driveway without any special tools.
- โ Eliminates Guesswork: Stop throwing parts at your truck. A failing PCM is a very common issue on these vehicles, and this is the correct way to fix it.
How to Ensure a Perfect Match
To guarantee compatibility, please locate the part number on your vehicle’s original PCM. This module is a direct replacement for service numbers 16263494, 16265035, 8162634940, and others listed in the fitment guide. After purchasing, simply provide us with your VIN, and we’ll handle the programming. It’s that easy to get your truck running right again.