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UNDERHOOD Fuse Block

NOTE: Underhood fuse block is located in the left front of the engine compartment, near the battery. See Fig 1.
Fig 1: Locating Underhood Fuse Block
G00330687Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Underhood Fuse Block Components
GM1251618Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood Fuse And Relay Identification Legend

Device Rating Fuse And Relay Description
Ef1 - PWR WNDW 30A Power Window Relay
Ef2 - MAIN RELAY 20A Main Relay (1.2L)
Ef3 - COOL FAN 30A Cooling Fan Relay
Ef4 - ABS 50A EBCM
Ef5 - IGN1 30A Ignition-1
Ef6 - IGN2 30A Ignition-2
Ef7 - I/P FUSE 30A Battery Main
Ef8 - HVAC BLOWER 20A Blower Motor
Ef9 - FOG LAMPS 15A Front Fog Lamp Relay
Ef10 - FUEL 15A Fuel Pump Relay
Ef11 - HORN 10A Horn, Theft Deterrent Alarm, and Hood Contact Switch
Ef12 - S/ROOF 20A Sun Roof Module
Ef13 - Not Used
Ef14 - ILLUM LT 10A License Lamp, Tail Lamp, Position Lamp
Ef15 - ILLUM RT 10A Tail Lamp, Position Lamp, Illumination Lamp
Ef16 - DIODE - Fog
Ef17 - Not Used
Ef18 - A/C 20A A/C Compressor
Ef19 - HEAD LAMPS 25A DRL Module, Head Lamp Relay
Ef20 - ILLUM LAMPS 20A Illumination Relay
Ef21 - DEFOG 30A Defog
Ef22 - INT LTS 10A Room Lamp, Trunk Lamp
Ef23 - LOW BEAM LT 10A Head Lamp Low
Ef24 - LOW BEAM RT 10A Head Lamp Low
Ef25 - HI BEAM LT 10A Head Lamp High
Ef26 - HI BEAM RT 10A Head Lamp High
Ef27 10A Spare
Ef28 15A Spare
Ef29 20A Spare
    Head Lamps Hi Relay
    PWR WNDW Relay
    Cool Fan CNTRL Relay
    Cool Fan Hi Relay
    Cool Fan Low Relay
    Head Lamps Low Relay
    FRT Fog Relay
    Fuel Pump Relay
    A/C CMPRSR Relay
    ILLUM Lamps Relay