FixVault

UNDERHOOD Fuse Block

NOTE: Underhood fuse block is located on driver's side of engine compartment. See Fig 1.
Fig 1: Locating Underhood Fuse Block
G00351328Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Underhood Fuse Block Components
G00351329Courtesy of GENERAL MOTORS CORP.
UNDERHOOD FUSE BLOCK LEGEND (4.2L ENGINE)

Fuse or Relay Rating Description
ECAS Fuse 30A Automatic Level Control Compressor
HI HDLP-RT Fuse 10A Right high-beam headlamp
LOW HDLP-RT Fuse 10A Right low-beam headlamp (daytime running lamp)
TRL RB/U Fuse 10A Trailer Connector
HI HDLP-LT Fuse 10A Left high-beam headlamp
LOW HDLP-LT Fuse 10A Left low-beam headlamp (daytime running lamp)
WASH Fuse 20A HDLP WASH Relay
ATC Fuse 25A Transfer Case Shift Control Module, Transfer Case Encoder Motor
W/S WASH Fuse 15A W/S WASH Relay
PCMB Fuse 20A F/PMP Relay, Powertrain Control Module (PCM)
FOG LAMP Fuse 15A FOG LP Relay
ST/LP Fuse 25A Stoplamp Switch
CIGAR Fuse 20A Data Link Connector (DLC), Cigar Lighter
COILS Fuse 10A HDLP-HI Relay, Hi beam headlamps
RIDE Fuse - Not Used
TBC IGN 1 Fuse 10A Body Control Module (BCM)
CRANK Fuse 10A Powertrain Control Module
SIR Fuse 10A Inflatable Restraint Sensing and Diagnostic Module (SDM)
ELEK BRK Fuse 30A Trailer Brake Wiring
FAN Fuse 10A FAN Relay (Fan Driver Module)
HORN Fuse 15A HORN Relay
IGN E Fuse 10A IGN 1 Relay, A/C Relay, Park/Neutral Position (PNP) Switch, Headlamp Leveling Actuators, Inverting Driver Module, Stop Lamp Switch, Traction Control Switch, Headlamp Leveling Switch, Instrument Panel Cluster, Turn Signal/Multifunction Switch, Inside Rearview Mirror
ETC Fuse 10A Powertrain Control Module (PCM)
IPC/DIC Fuse 10A Instrument Panel Cluster (IPC)
BTSI Fuse 10A Stop lamp switch, A/T Shift Lock Actuator
ENG I Fuse 10A EVAP Canister Purge Solenoid, EVAP Canister Vent Solenoid
BACK UP Fuse 15A Park/Neutral Position (PNP) Switch
PCM I 15A Powertrain Control Module (PCM), Fuel Injectors, Ignition Coils
O2 Fuse 10A Heated Oxygen Sensors
A/C Fuse 10A A/C Relay
TBC I Fuse 10A Body Control Module (BCM), and (BAE only) Theft Deterrent Alarm and Theft Deterrent Module
TRLR RT TURN Fuse 10A Trailer Connector
TRLR LT TURN Fuse 10A Trailer Connector
FLASH Fuse 25A Turn Signal/Hazard Flasher Module
TRAILER 30A Trailer Connector
ABS Fuse 60A Electronic Brake Control Module (EBCM)
IGN A Fuse 40A Starter Relay, Ignition Switch
BLOWER Fuse 40A Blower Motor Resistor Assembly (HVAC Manual), Blower Motor Control Processor (HVAC Auto)
IGN B Fuse 40A Ignition Switch
HDLP WASH Relay - Headlamp Washer Pump
REAR WASH Relay - Rear Window Washer Fluid Pump
FOG LP Relay - Front Fog Lamps
HORN Relay - Horns
F/PMP - Fuel Pump Relay - Fuel Pump
W/S WASH Relay - Windshield Washer Fluid Pump
HDLP-HI Relay - Body Control Module (BCM)
A/C Relay - Headlamp - High Beam - Left
FAN Relay - Engine Cooling Fan
HDM Relay - Headlamp Driver Module; low beam headlamps (daytime running lamps)
STARTER Relay - Starter Solenoid
I/P BATT Fuse 125A Fuse Block-Rear