Test Description

The following numbers refer to the steps on the diagnostic table.

1. 3.   Determines if the OnStar® status LED has the necessary GRN LED signal circuit.
2. 5.  If the GRN LED signal is shorted to voltage then the OnStar® three button assembly has been damaged. The OnStar® three button assembly has to be replaced.
   Fig 1: OnStar Button LED Inoperative

   Courtesy of GENERAL MOTORS CORP.