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Home >> Chevrolet >> 2012 >> Chevy Express H1500, Van Cargo >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> OnStar Button LED Malfunction >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON, command the Green LED ON and OFF with a scan tool while observing the green LED on the OnStar® button assembly. The green LED should turn ON and OFF when commanded.
  2. Command the red LED ON and OFF with a scan tool while observing the red LED on the OnStar® button assembly. The red LED should turn ON and OFF when commanded.