GM Service Manual Online
For 1990-2009 cars only

Important: The following steps must be completed before using the symptom tables.

Visual/Physical Inspection

   • Inspect for aftermarket devices which could affect the operation of the Keyless Entry System. Refer to Checking Aftermarket Accessories .
   • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
   • Inspect that the transmitter is the correct model for the vehicle. An incorrect module will not operate.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions . Refer to Testing for Intermittent Conditions and Poor Connections .

Symptoms list

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

Keyless Entry System Inoperative