Is Your S10 or Sonoma Running Rough?
If your 2000-2003 Chevrolet S10 or GMC Sonoma with the 2.2L engine is suddenly stalling, misfiring, or refusing to start, the problem might not be a simple sensor or a bad fuel pump. These issues often trace back to the heart of your truck’s electronics: the Powertrain Control Module (PCM). This computer is the brain of your vehicle, managing everything from fuel injection and spark timing to transmission shifting. When it fails, it can cause a cascade of frustrating and hard-to-diagnose problems. Don’t let a faulty PCM keep you off the road. This direct-replacement PCM, part number 12202203, is the reliable solution to restore your truck’s performance and dependability.
Common Symptoms of a Failing S10 PCM
- ✔ Check Engine Light is on with communication error codes.
- ✔ Engine cranks but refuses to start.
- ✔ Stalling or rough idling for no apparent reason.
- ✔ A noticeable drop in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The engine misfires, hesitates, or stumbles during acceleration.
- ✔ No communication with your OBD-II scan tool.
The Plug-and-Play Solution for Your 2000-2003 S10 PCM
Replacing a PCM isn’t just about swapping a box. The module must be correctly programmed with your vehicle’s specific Vehicle Identification Number (VIN) and the latest GM software updates. This ensures all the components in your truck communicate correctly. We take the guesswork and dealership hassle out of the process. When you order from us, you simply provide your VIN, and our technicians will flash the module before it ships. It arrives at your door ready for installation. This process ensures compatibility with your truck’s specific options and emissions equipment, restoring it to factory-specified operation.
This module is a direct fit for 2000-2003 S10, S15, and Sonoma models equipped with the 2.2L engine. It is located in the right-hand front of the engine compartment, making it accessible for a straightforward replacement. After installation, you will need to perform a simple security relearn procedure (often called a CASE relearn), which can typically be done without special tools and ensures your vehicle recognizes the new module. This final step syncs the PCM with your truck’s anti-theft system and crankshaft position sensor, finalizing the repair and getting you back on the road with confidence.
Frequently Asked Questions
Do I need to program this PCM?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s VIN during or after checkout, and we will flash the module with the correct GM software for your specific truck.
What is a CASE relearn and is it required?
A CASE (Crankshaft Angle Sensor Error) relearn is a procedure that synchronizes the new PCM with your engine’s crankshaft position sensor. It is highly recommended after installation to ensure accurate timing and prevent potential misfire codes. Many high-end scan tools can perform this, or a simple drive cycle may complete it.
Where is the PCM located on my 2000-2003 S10/Sonoma?
The PCM is located in the engine compartment on the right-hand (passenger) side, typically near the firewall or inner fender.
Is this a new or used part?
This is a high-quality, tested replacement part that has been returned to factory specifications. It is guaranteed to perform reliably and is backed by our warranty.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls both engine and transmission functions. If your shifting issues are electronic in nature and caused by a faulty module, this replacement will resolve them. However, it will not fix internal mechanical issues with the transmission.