FixVault

UNDERHOOD Fuse Block

NOTE: Underhood fuse block is located on driver's side of engine compartment, next to battery. See Fig 1.
Fig 1: Locating Underhood Fuse Block
G00100801Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Underhood Fuse Block Components
G00100802Courtesy of GENERAL MOTORS CORP.
UNDERHOOD FUSE BLOCK RELAY IDENTIFICATION

RELAY DESCRIPTION
IGN 1 Relay
Starter Relay
Fuel Pump Relay
Rear Defog Relay
Headlamp Relay
DRL Relay
A/C Relay
Fog Lamp Relay
Horn Relay
UNDERHOOD FUSE BLOCK LEGEND

Fuse/Circuit Breaker Rating Description
STUD 1 Fuse #1 40A Trailer Wiring / Automatic Level Control Compressor
ABS Fuse #2 60A Brake Pressure Modulator Valve (Pump)
IGN A Fuse #3 40A Starter Relay, Ignition Switch-IGN 1, TURN, SEO IGN Fuses
AIR Fuse #4 30A Secondary Air Injection Reaction Pump
RAP Fuse #5 50A Rap Relay, MIR/LOCK DR LOCK Fuses and SEATS Circuit Breaker
IGN B Fuse #6 50A Ignition Switch-Rap Relay, Wiper/Washer and SEO ACCY Fuses
RAP 2 Fuse #7 50A Power Window RF switch, Power Window RR Switch, Power Sunroof
STUD 2 Fuse #8 30A Body Wiring Provisions, Trailer Wiring
TRL R TRN 9 10A Trailer Turn and Stop
TRL L TRN Fuse #10 10A Trailer Turn
INJ B Fuse #11 15A Fuel Injectors 2, 4, 6, and 8, Ignition Coils, Engine Shutoff Solenoid and Sensor-Diesel
PARK LP Fuse #12 30A Park Lamp Relay, Headlamp and Panel Dimmer Switch-Park Lamps
FRT HVAC Fuse #13 30A Blower Motor (High Speed)
STOP LPS Fuse #14 20A VEH STOP and CHMSL Fuses, Trailer Wiring (LH, RH Turn and Stop Lamp)
ECM 1 Fuse #15 10A Vehicle Control Module (VCM)/Powertrain Control Module (PCM)-(from IGN 1 Relay)
CHMSL Fuse #16 10A Center High Mounted Stop Lamp
VEH STOP Fuse #17 10A Vehicle Stop Lamps
IMPORTANT: Numbers shown are to reference position only - component not marked.
TRL B/U Fuse #19 10A Trailer Backup Lamps
INJA Fuse #20 15A Fuel Injectors 1, 3, 5, and 7, Ignition Coils, Glow Plug Module, Fuel Heat, Water in Fuel (WIF) Sensor, Wastegate Solenoid
RR HVAC Fuse #21 30A Rear Heater, Rear Blower Relays
VEH B/U Fuse #22 15A Vehicle Backup Lamps
ENG 1 Fuse #23 10A Mass Air Flow (MAF) Sensor, Camshaft Position (CMP) Sensor, Evaporator Emission (EVAP) Canister Vent Valve, Evaporative Emission (EVAP) C Purge Valve
ETC Fuse #24 15A Electronic Throttle Control (ETC)
IGN E Fuse #25 10A A/C Compressor Clutch Relay, DRL Relay, Rear Defog Relay, Secondary Injection Reaction Pump Relay
B/U LP Fuse #26 25A Backup Lamps, BTSI
ATC Fuse #27 20A Automatic Transfer Case (ATC) Control Module, Encoder Motor
RTD Fuse #28 30A Real Time Damping (RTD)
RR PRK Fuse #29 10A RR Park Lamps
ECM B Fuse #30 20A Fuel Pump Relay, Vehicle Control Module (VCM)/Powertrain Control Module (PCM)
O2 A Fuse #31 15A Heated Oxygen Sensors
O2 B Fuse #32 15A Heated Oxygen Sensors
LR PRK Fuse #33 10A LR Park Lamps
RR DEFOG Fuse #34 30A Rear Window Defogger
TRL PRK Fuse #35 15A Trailer Park
PRIME #36 - Fuel Pump Prime Port
RT HDLP Fuse #37 15A RH Headlamps (Hi and Low)
HTD MIR Fuse #38 10A Heated Outside Mirrors
LT HDLP Fuse #39 15A LH Headlamps (Hi and Low)
A/C Fuse #40 10A A/C Compressor Clutch
AUX PWR Fuse #41 20A Auxiliary Power Outlets
SEO 2 Fuse #42 30A Roof Beacon and Relay, Full Feature Seat - LH and RH
SEO 1 Fuse #43 15A Roof Beacon Switch, Cellular Phone Wiring Provisions
DRL Fuse #44 10A Daytime Running Lamps (DRL)
FOG LPS Fuse #45 15A Fog Lamps
RADIO Fuse #46 15A Radio and Instrument Cluster
CIGAR Fuse #47 15A Data Link Connector, Cigar Lighter
RT TURN Fuse #48 10A RH Turn Signals
ATSLC Fuse #49 10A Automatic Transmission Shift Lock Control Solenoid
LT TURN Fuse #50 10A LH Turn Signals
FR PRK Fuse #51 10A Front Park Lamps
W/W Pump Fuse #52 15A Windsheild Washer Pump
IGN C Fuse #53 20A Ignition Switch, Crank, IGN 0 Fuses
RDO AMP Fuse #54 25A Radio/Audio Systems Amplifier
HAZ LP Fuse #55 20A Hazard Lamps
EXP LPS Fuse #56 10A Not Used
HORN Fuse #57 15A Horn/Horn Relay
CTSY LP Fuse #58 15A Inadvertent Power Relay (Courtesy Lamps)
RR WPR Fuse #59 25A RR Wiper Washer, RR Wiper Motor
TBC Fuse #60 10A Body Control Module