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Fuse Block Label

Fig 1: Fuse/Relay Block
GM399920Courtesy of GENERAL MOTORS COMPANY
Fuse Block Label Usages

Fuse/Circuit Breaker Rating Description
IMPORTANT:

Numbers shown are to reference position only - component not marked.

HVAC 1 Fuse #1 10A HVAC Control Module, Mode Door Motors/Actuators
IGN 3 Fuse #2 10A Memory Seat Module, LH and RH Heated Seat Switch
BRAKE Fuse #3 10A Electronic Brake Control Module (EBCM)
HTR A/C Fuse #4 25A Blower Motor (all except high speed)
IGN 0 Fuse #5 10A Automatic Transmission, Instrument Cluster, Vehicle Control Module (VCM)/Powertrain Control Module (PCM)
CRUISE Fuse #6 10A Cruise Control Module, Cruise Control Switch, Instrument Cluster, Body Control Module (BCM)
4WD Fuse #7 15A Auxiliary Battery Relay, Front Axle Actuator/Switch, Automatic Transfer (ATC) Control Module, Vehicle Control Module (VCM)
TURN Fuse #8 20A Feeds LT Turn and RT Turn Fuses - Turn Signals
WS WIPER Fuse #12 25A Windshield Wiper, Windshield Washer Pump
SEO IGN Fuse #13 10A Selectable Ride
ILLUM Fuse #14 10A Instrument Cluster, Instrument Panel Switches (Backlit)
IGN 1 Fuse #15 10A Body Control Module (BCM), Instrument Cluster, Automatic Day-Night
SEO ACCY Fuse #16 10A Body Builder Provision
CRANK Fuse #17 10A Starter Relay
AIR BAG Fuse #18 15A Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Instrument Panel Module Switch
MIR/LOCK Fuse #19 3A Power Mirrors, Memory Seat Switch, Power Door Lock Relays
SEATS (CB) #20 25A Power Seats, Memory Seats (LH and RH)
DR LOCKS Fuse #21 20A Power Door Lock (Actuators)
LOCK Fuse #22 15A Power Door Locks (Actuators)
INT PK Fuse #24 10A Ash Tray Lamp, Cupholder, Radio Display Lighting, Center Roof Markers, Back Lighting for: Door Switches; Heated Seat Switches; Sunroof Switch
UNLOCK Fuse #25 15A Power Door Locks (Actuators)
PWR WDO (CB) #27 25A Power Windows (Uplevel Vehicle)
RDO I Fuse #29 10A Radio (Base Vehicle)
UNLOCK JMPR (Relay/Fuse) 30A Power Door Locks (non-Keyless Entry)