Onstar Keypad, One or More Buttons Do Not Work

OnStar Keypad, One Or More Buttons Do Not Work

Fault symptom
No function or poor function of buttons.

Conditions
No DTCs stored with the fault symptom in question.

Diagnostic help

IMPORTANT: Before starting work, contact and information OnStar Customer Care (OCC) that you will be servicing the unit.

Fault Diagnosis Procedure