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Home >> Chevrolet >> 2007 >> HHR LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> OnStar Button LED Inoperative >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2007 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle communication interface module (VCIM) commands on the red or green LED by supplying ground to either the keypad red signal circuit or keypad green signal circuit.

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