Buick 2005 manual Underhood Fuse Block, Relay Usage

Fuse	Usage
34	Power Sunroof
35	Power Windows
36	Map Lamps, Courtesy Lamps and
	Instrument Panel Lights
37	Radio
38	UQ3 Radio Amplifier
39	Head-Up Display
40	Hazard Flashers
	Instrument Panel Cluster, Climate
41	Control, Security LED and Remote
	Keyless Entry Mode
42	PASS-Key®III
44	Body Control Module (BCM)
46	Advanced Occupant System Module

Relay	Usage
20	Rear Defogger Relay
23	Ignition Relay
27	Accessory Relay
33	Retained Accessory Power Relay
43	Accessory Diode
45	Back-Up Lamps

Underhood Fuse Block

This fuse block is located in the engine compartment, on the passenger’s side of the vehicle. See Engine Compartment Overview on page 5-12for more information on location.

The back-up lamp relay (A) is located behind and to the left of the underhood fuse block.

To remove the cover, press the two tabs in and lift up the cover.

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