Programmed 2001-2002 Blazer S10 PCM 12576160

Restore Peak Performance to Your GM Vehicle

Is your 2001-2002 S10 Blazer, Jimmy, or another GM truck suffering from baffling electrical issues, poor engine performance, or a persistent check engine light? The Powertrain Control Module (PCM), often called the vehicle’s main computer, is the central command for all engine and transmission operations. When it begins to fail, it can cause a cascade of frustrating and hard-to-diagnose problems. This replacement PCM, part number 12576160, is the definitive solution to restore your vehicle’s factory performance and reliability.

This isn’t just a generic part off a shelf. We provide a comprehensive service that makes your repair job as simple as possible. Upon purchase, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians then flash the module with the latest, most stable GM-certified software specific to your exact vehicle build. This critical step ensures that the PCM communicates perfectly with your engine, transmission, anti-lock brakes, and all other onboard systems, eliminating compatibility issues that plague non-programmed modules.

Diagnosing a Faulty 2001-2002 Blazer S10 PCM

A failing PCM can mimic many other mechanical problems, leading to wasted time and money on unnecessary parts. If your vehicle is experiencing any of the following symptoms, a faulty computer could be the root cause. This module is the correct solution for these common failure indicators.

Common Symptoms of PCM Failure:

• ✔ Check Engine Light: Your check engine light is illuminated, often with communication-related trouble codes (like U-codes) or multiple random sensor codes.
• ✔ Engine Performance Issues: You may experience rough idling, stalling, engine misfires, or a noticeable decrease in power and acceleration.
• ✔ Poor Fuel Economy: A sudden, unexplained drop in your vehicle’s gas mileage can be a sign the PCM is not managing the fuel mixture correctly.
• ✔ Transmission Shifting Problems: The PCM controls shift points and line pressure. A faulty unit can cause harsh shifting, delayed engagement, or getting stuck in one gear.
• ✔ No-Start Condition: The engine may crank over but refuse to start. This can happen if the PCM is not properly firing the ignition coils or fuel injectors.
• ✔ Intermittent Problems: Issues that come and go with temperature changes or seemingly at random are a classic sign of internal electronic failure within the PCM.

Plug-and-Play Installation and Security Relearn

Because we program the module to your VIN before shipping, the physical installation is straightforward. For a 2001-2002 Blazer S10 or Jimmy, the PCM is typically located in the right-hand front of the engine compartment. Simply disconnect the negative battery terminal, carefully unplug the electrical connectors, unbolt the old module, and install the new one. After reconnecting everything, you will likely need to perform a security relearn procedure, also known as the Passlock or VATS relearn. This is a simple process that syncs the new PCM with your vehicle’s anti-theft system and does not require any special tools.

Standard Security Relearn Procedure (30-Minute):

1. Attempt to start the engine. It will start and then stall. Leave the key in the ‘ON’ position.
2. Wait 10-12 minutes. The ‘Security’ or ‘Theft’ light on the dash should turn off or stop flashing.
3. Turn the key to the ‘OFF’ position for 5 seconds.
4. Repeat steps 1-3 two more times for a total of three 10-minute cycles.
5. After the third cycle, the vehicle will be relearned to the new PCM and should start and run normally.

This module is a direct replacement for part numbers 12200411, 12201281, 12576160, and 52369718 and fits a massive range of GM vehicles from this era, including the Silverado, Tahoe, Suburban, Sierra, Yukon, Express, Savana, Corvette, and Camaro.