LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Geo >> 1990 >> Storm Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Electronic Control Module (ECM)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Electronic Control Module (ECM)

NOTE: For electronic control module locations, see ECM LOCATION table.

Power for ECM is supplied from the ECM fuse. The ECM distributes power or controls ground of various sensors, switches and solenoids for engine control.

CAUTION: Automatic Transaxle Electronic Control Unit (ECU) on 4-speed transaxle may be mounted on left side of steering column. DO NOT confuse this with the ECM. The ECM contains a 24 and 32-pin connector as the ECU contains a 16 and 20-pin connector.
ECM LOCATION (1)

Application Location
Storm & Storm GSi On Left Side of Instrument Panel Or Left Kick Panel
(1) ECM has a 24-pin and a 32-pin connector.