Remote Keyless Entry Systems - Old Style: Description
NOTE:
This article applies to "old style" "C" & "K" Series vehicles equipped with 5.7L, 6.5L and 7.4L engines. For "new style" "C" & "K" Series vehicles equipped with 4.3L, 4.8L, 5.3L and 6.0L engines, see REMOTE KEYLESS ENTRY SYSTEMS -- SIERRA, SILVERADO, SUBURBAN, TAHOE, YUKON & YUKON XL
article.
WARNING:
Vehicles are equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article.
Remote keyless entry system allows driver to operate vehicle door locks and rear cargo doors or liftgate window (utility models) release from outside vehicle using a remote transmitter. Transmitter must be within 33 feet (10 meters) of vehicle for receiver to detect coded signal. There are 2 systems used on these vehicles. Base system can be identified buy a 2 or 3 button transmitter. Third button is for cargo doors or liftgate on utility vehicles. Base system uses a Remote Control Door Lock Receiver (RCDLR) to activate door lock system. Luxury system can be identified buy a 4 button transmitter. Luxury system is on utility vehicles only. Luxury system uses Body Control Module (BCM) as receiver and BCM operates door lock functions.