Buzzers, Relays & Timers
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 Chevrolet Tahoe, and 2002 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
BUZZERS, RELAYS & TIMERS LOCATION
| Component | Location |
|---|---|
| A/C Compressor Clutch Relay | In underhood fuse block. |
| Auxiliary Battery Relay | At right rear of engine compartment. See Figure. |
| Compressor/Leveling Relay | On left side of engine compartment, near underhood fuse block. |
| Courtesy Lamp Relay | In body relay block. |
| Daytime Running Lamp (DRL) Relay | In underhood fuse block. |
| Driver Unlock Relay | In fuse block. |
| Emergency Roof Lamp Relay | At left side of engine compartment, on underhood fuse block bracket. |
| Exterior Illumination Lamps Relay | In body relay block. |
| FM Impedance Matching Module | Above left rear quarter glass, in headliner. |
| Fog lamp Relay | In underhood fuse block. |
| Fuel Pump (FP) Relay | In underhood fuse block. |
| Fuel Pump (FP) Relay (Primary) (6.6L VIN 1) | At left side of engine compartment, on underhood fuse block bracket. |
| Fuel Pump (FP) Relay (Secondary) | At left side of engine compartment, on underhood fuse block bracket. |
| Glow Plug/Intake Heater Relay Assembly (6.6L VIN 1) | On left side of engine, above valve cover. |
| Headlamp Relay | In underhood fuse block. |
| Heated Seat Relay (Driver) | Under driver's seat. |
| Heated Seat Relay (Passenger) | Under front passenger's seat. |
| Horn Relay | In underhood fuse block. |
| IGN 1 Relay | In underhood fuse block. |
| Inadvertent Power Relay | In body relay block. |
| Intake Air Heater (IAH) Relay (6.6L VIN 1) | At rear of engine, integral to glow plug/intake heater relay assembly. |
| Lock Relay | In left I/P fuse block. |
| Park Lamp Relay | In body relay block. |
| Power Take-Off (PTO) Relay | At left side of engine compartment, on underhood fuse block bracket. |
| RAP 1 Relay | In left I/P fuse block. |
| RAP 2 Relay | In right I/P fuse block. |
| Rear Window Defogger Relay | In underhood fuse block. |
| Roof Beacon Relay | At lower left "B" pillar. |
| Secondary Air Injection (AIR) Relay | In right rear of engine compartment. |
| Starter Relay | In underhood fuse block. |
| Unlock Relay | In left I/P fuse block. |