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Home >> GMC >> 2003 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> Electrical >> Component Locations >> Electrical Component Locator >> Buzzers, Relays & Timers

Buzzers, Relays & Timers

BUZZERS, RELAYS & TIMERS LOCATION

Component Location
A/C COMP Relay In underhood fuse block.
Auxiliary Battery Relay At right rear of engine compartment. See Figure.
DEFOG RELAY In I/P relay block.
DRL Relay In underhood fuse block.
DRIVER UNLOCK Relay In left I/P fuse block.
Engine Glow Plug Relay (6.6L) At left rear of engine. See Figure.
FOG LP Fuse In underhood fuse block.
F/PMP Relay In underhood fuse block.
Fuel Pump Relay (Secondary) On underhood fuse block bracket.
HDLP-HI Relay In underhood fuse block.
HDLP-LOW Relay In underhood fuse block.
HORN Relay In underhood fuse block.
IGN 1 Relay In underhood fuse block.
LOCK Relay In left I/P fuse block.
PARK LP Relay In underhood fuse block.
Power Take-Off Relay On underhood fuse block bracket.
Roof Beacon Relay At lower left "B" pillar.
STARTER Relay In underhood fuse block.
UNLOCK Relay In left I/P fuse block.
W/S WASH Relay In underhood fuse block.