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Control Units

WARNING: This page is about a different car, the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
CONTROL UNITS LOCATION

Component Location
Auxiliary HVAC Control Processor Behind auxiliary HVAC controller, in headliner.
Body Control Module Behind lower right side of dash.
Central Sequential Fuel Injection (4.3L VIN X) On bottom of intake manifold. See Figure .
Cruise Control Module Near brake fluid reservoir.
Electronic Brake Control Module On left frame rail, near center of vehicle.
Fuel Injector Control Module (CNG) On left side of radiator support.
Ignition Control Module (4.3L VIN X) On top right side of engine, at ignition coil. See Figure .
Inflatable Restraint Sensing & Diagnostic Module Under left front seat. See Figure .
Powertrain Control Module In engine compartment, on left inner fender. See Figure .
Remote Control Door Lock Receiver Behind upper left center of dash. See Figure .
Turn Signal/Hazard Flasher Module Behind left center of dash. See Figure .
Vehicle Communication Interface Module Below steering column. See Figure .