What's the Chevy express ecm location?

The ECM is located directly beneath the fuse box under the hood of the Chevy Express. Your ECM is responsible for making constant, on-the-fly adjustments to Your engine. This includes managing the fuel-to-air ratio and engine timing, which are its primary functions. It also shares vital data with the PCM and the TCM, which control the shifting, anti-lock brakes, and traction control systems.Your engine is never as finicky about fuel-to-air ratio as it is when its firSTStarting up. If Your ECM is setting the ratio incorrectly, this is the first time Youll notice. Hiccups during startup, or having to turn the key haLFA dozen times to get the engine to turn over, are a sure sign of engine trouble, and a possible sign that Your ECM is to blame.