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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1144 (Cellular Communication System) >> Diagnostic Information and Procedures >> OnStar Button LED Inoperative >> Test Description
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Test Description

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers 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 Diagnostic Table
    G01503438Courtesy of GENERAL MOTORS CORP.
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