GM Service Manual Online
For 1990-2009 cars only

Important: Review the Keyless Entry System Description and Operation in order to familiarize yourself with the system functions.

Visual/Physical Inspection

    • Inspect the key fob to make sure it's the correct one for the vehicle. Refer to Keyless Entry Transmitter Identification .
    • Inspect for aftermarket devices which could affect the operation of the power mirrors and the power windows systems. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • Inspect all related ground points for being clean and tight.

Intermittent

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

Symptom List

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

    •  Keyless Entry Does Not Program
    •  Keyless Entry System Inoperative

Refer to Symptoms - Doors for Door diagnostics.