One or More Buttons Inoperative - OnStar

Diagnostic Chart (Part 1 Of 2):

Diagnostic Chart (Part 2 Of 2):

TEST DESCRIPTION
This procedure is for diagnosing problems with the OnStar(R) button assembly. The following numbers refer to the steps in the table.
3. Tests for proper operation of the OnStar(R) Center button.
4. Tests for proper operation of the OnStar(R) Call Answer/Call End button.
5. Tests for proper operation of the OnStar(R) Emergency button.
9. Determines if the OnStar(R) button assembly has the necessary power and signal circuits.