Keyless Entry System - Remote: Diagnosis GMC Envoy I

Without Scan Tool

1. With ignition switch in OFF position, hold down power unlock button on door panel. Turn ignition switch to ON position, then OFF. Turn ignition switch to ON position, then OFF a second time. Release power unlock button on door panel. Receiver will respond by locking and then unlocking all doors and unlatching rear window (utility vehicles only) to indicate programming mode.
2. Hold down LOCK and UNLOCK buttons on transmitter for 15 seconds. Receiver should respond by locking then unlocking all doors and unlatching rear window (utility vehicles only).
3. Repeat step 2) for each additional transmitter. All extra transmitters MUST be reprogrammed at this time. When a new transmitter is reprogrammed, old transmitters will be deactivated.
4. Turn ignition to ON position to exit transmitter mode.

With Scan Tool

Connect scan tool as directed. Enter Special Functions screen. Select appropriate menu selection. Once program has been entered continue programming by holding down LOCK and UNLOCK buttons on transmitter for 15 seconds. Receiver should respond by locking and then unlocking all doors and unlatching rear window (utility vehicles only). Repeat for each additional transmitter. All extra transmitters MUST be reprogrammed at this time. When a new transmitter is reprogrammed, old transmitters will be deactivated.

TROUBLE SHOOTING

Check GAUGES fuse No. 4 at instrument panel fuse block. Ensure all electrical connectors, circuits and grounds are good. Ensure power door locks system is operational. See POWER DOOR LOCKS article. Try second transmitter. If second transmitter operates system, replace battery in first transmitter. Ensure transmitter battery terminals are clean and making good contact.

TESTING

Note. To prevent damage, connector Test Adaptor Kit (J 35616-A) must be used whenever a diagnostic procedure requires checking or probing a terminal. To locate and identify terminals, see WIRING DIAGRAMS .