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UNDERHOOD Fuse Block

Underhood fuse block is located on driver's side inner fender in the engine compartment. See Figure.

Fig 1: Identifying Underhood Fuse Block Components
G00310277Courtesy of GENERAL MOTORS CORP.
UNDERHOOD FUSE BLOCK LEGEND

Device Rating Description
FOG LAMP Relay - Fog Lamps
DRL Relay - DRL Resistor
HORN Relay - Horn
ECM/TCM Fuse 10A ECM, TCM
HORN Fuse 15A HORN Relay
EMISS Fuse 10A Heated Oxygen Sensors, EVAP Purge Solenoid, EVAP Vent Solenoid
EMISS Fuse 15A Heated Oxygen Sensors, EVAP Purge Solenoid, EVAP Vent Solenoid
REAR DEFOG Fuse 25A REAR DEFOG Relay
COOL FAN HI Relay 4-Cyl - Cooling Fan, Cooling Fan Resistor, ECM
COOL FAN 1 Relay V6 - Left Cooling Fan, PCM
ENG MAIN Relay - EMISS Fuse, ETC Fuse (L61), ECM/CAM Fuse
REAR DEFOG Relay - Rear Defogger Grid
FOG LP Fuse 10A FOG LAMP Relay
LH HDLP Fuse 15A Left High and Low Beam Headlamps
RH HDLP Fuse 15A Right High and Low Beam Headlamps
A/C DIODE -  
WIPER SYSTEM Relay - FRT WIPER Fuse, RR WIPER Fuse
RR WIPER Fuse 15A REAR WIPER Relay
FRT WIPER Fuse 25A FRT WIPER Relay
ETC Fuse 15A ECM
PWR WDW Relay - SUNROOF Fuse, Driver and Front Passenger Window Switches
ABS Fuse (L66) 10A EBCM
SUNROOF Fuse 20A Sunroof Control Module
CIGAR/AUX 2 Fuse 20A Cigar Lighter
BRAKE Fuse 15 A Stop Lamp Switch
FRT WIPER Relay - Windshield Wiper Motor, Windshield Wiper/Washer Switch
COOL FAN LOW Relay 4-Cyl. - ECM
COOL FAN 2 Relay V6 - Cooling Fan Relay 3, PCM, Right Cooling Fan
A/C CLUTCH Relay - A/C Compressor Clutch
A/C CLUTCH Fuse 10A A/C CLUTCH Relay
FUEL PUMP Fuse 10A FUEL PUMP Relay
IGN INJ Fuse 4-Cyl. 15A Fuel Injectors, ICM
ECM/CAM Fuse V6 15A CMP Sensor, ECM
INJECTORS Fuse V6 10A Fuel Injectors
PWR TRAIN Fuse 10A ECM, Automatic Transmission (A/T), PNP Switch (L66)
BACKUP LAMP Relay - Not Used
AUX 1 OUTLET Fuse 15A Auxiliary Power Outlet
BACKUP Fuse 10A Backup Switch (M/T), Coolant Level Switch, PNP Switch (A/T), Vehicle Speed Sensor (M/T)
FUEL PUMP Relay - Primary Fuel Pump and Sender Assembly
PREM AUD Fuse 20A Amplifier (WBM)
HTD SEATS Fuse 20A Driver and Front Passenger Heated Seat Modules
RR WIPER Relay - Rear Wiper Motor
ABS Fuse 20A EBCM
BATT FEED Fuse 40A I/P Fuse Block B+ Fuses
ABS PWR Fuse 40A EBCM
COOL HI Fuse 4-Cyl. 40A COOL FAN HI Relay
COOL 1 Fuse V6 25A COOL FAN 1 Relay
PWR WDW Fuse 30A PWR WDW Relay
HVAC BLOWER Fuse 40A HVAC Blower Motor
IGN Fuse 30A Ignition Switch
COOL LO Fuse 4-Cyl. 20A COOL FAN LOW Relay
COOL 2 Fuse V6 25A COOL FAN 2 Relay
PWR SEAT Circuit Breaker 30A Driver Seat Adjuster Switch