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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 243 (Cellular Communication System) >> Diagnostic Information and Procedures >> OnStar Button LED Inoperative >> Test Description
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Test Description

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The numbers below Refer to the step numbers on the diagnostic table.

  1. 3.  Determines if the OnStar® status LED has the necessary Green LED signal circuit voltage.
  2. 5.  If the green LED signal is shorted to voltage then the OnStar® three button assembly has been damaged and the OnStar® three button assembly must be replaced.
Fig 1: OnStar Button LED Inoperative
G02422515Courtesy of GENERAL MOTORS CORP.