Silverado 1500 2WD V8-4.8L VIN V (2006)
Garage Door Opener Transmitter: Description and Operation
GARAGE DOOR OPENER DESCRIPTION AND OPERATION
The garage door opener (GDO) is located in the overhead console or drivers side sunshade. The valet switch, if equipped, provides battery voltage to the
GDO. If battery voltage is lost due to a condition such as a dead battery, the GDO unit relies on the non-serviceable internal power backup supply. For
Buick LaCrosse/Allure, the GDO unit does not have power unless the ignition key is in the ON position. The ignition key must be in the ON position for
Buick LaCrosse/Allure for the GDO to program. The unit is programmed using the customer's hand-held transmitters for the garage doors, electric
entrance gates, or lighting and security systems.
The GDO is rolling code capable. Rolling code is a system that allows the code that the customers receiver receives from the GDO to change every time
the GDO is used within operating range of the receiver. Rolling code programming requires the customer to push a learn/program button on the GDO
receiver at their home. This button is usually located on the receiver unit under a cover (light cover) on one end of the unit. The customer must follow the
GDO manufacturers instructions to program/learn the receiver to accept the HomeLink as an authorized opener for their unit. When the receiver and the
GDO are initially programmed together, a code is established and a new code is created for every new transmission. The software in the receiver
recognizes the GDO and accepts the new code.
The GDO is compatible with most, but not all types and brands of transmitters. If a problem should occur with a compatibility conflict with a transmitter,
call HomeLink(TM) at 1-800-355-3515.
The GDO is a transmitter operating between 288-399 MHz. The power and range of the transmitter is limited to comply with laws governing the
generation of radio frequency interference (RFI). The transmitter is programmed by the user to accept the signal generated by the user's transmitters.
Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
The GDO has 3 buttons that may be programmed for individual transmitter/receiver combinations to control up to 3 GDOs, security gates, and lighting
systems. Each button represents a transmitter code section of the transmitter, which operates separately from any other button, and may be considered a
separate transmitter. Operation consists of simply pressing a button to activate the corresponding transmitter.
Battery voltage is provided to the GDO from the IGN SEN fuse in the instrument panel (I/P) fuse block. The GDO is grounded through G400.
Inadvertent power is supplied from the body control module (BCM), except Buick LaCrosse/Allure.
