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 (Early Production)
G00351345Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Underhood Fuse Block Components (Late Production)
G00351346Courtesy of GENERAL MOTORS CORP.
UNDERHOOD FUSE BLOCK LEGEND (4.2L ENGINE)

No. Device Rating Description
1 ECAS Fuse 30A Automatic Level Control Compressor
2 HI HDLP-RT Fuse 10A Right High Beam Headlamp
3 LOW HDLP-RT Fuse 10A Right Low Beam Headlamp - Daytime Running Lamp
4 TRLR B/U Fuse 10A Trailer Connector
5 HI HDLP-LT Fuse 10A Left High Beam Headlamp
6 LOW HDLP-LT Fuse 10A Left Low Beam Headlamp - Daytime Running Lamp
7 WASH Fuse 20A HDLP WASH Relay
8 ATC Fuse 30A Transfer Case Shift Control Module, Transfer Case Encoder Motor
10 PCM B Fuse 20A F/PMP Relay, Powertrain Control Module (PCM)
11 FOG LP Fuse 15A FOG LP Relay
12 ST/LP Fuse 25A Stop Lamp Switch
13 CIGAR Fuse 20A Data Link Connector (DLC), Cigar Lighter
14 COILS Fuse 10A HDLP-HI Relay, High Beam Headlamps
15 EAP Fuse 15A EAP Relay (Late Production)
16 TBC IGN1 Fuse 10A Body Control Module (BCM)
17 CRANK Fuse 10A Powertrain Control Module (PCM)
18 SIR Fuse 10A Inflatable Restraint Sensing and Diagnostic Module (SDM)
19 ELEK BRK Fuse 30A Trailer Brake Wiring
20 Fan Fuse 10A FAN Relay - Fan Driver Module
21 HORN Fuse 15A HORN Relay
22 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
23 TAC Fuse 10A Throttle Actuator Control (TAC) Module
24 IPC/DIC Fuse 10A Instrument Panel Cluster (IPC)
25 BTSI Fuse 10A Stop Lamp Switch, A/T Shift Lock Actuator
26 ENG I Fuse 10A EVAP Canister Purge Solenoid, EVAP Canister Vent Solenoid
27 BACK UP Fuse 15A Park/Neutral Position (PNP) Switch
28 PCM I Fuse 15A Powertrain Control Module (PCM), Fuel Injectors, Ignition Coils
29 O2 Fuse 10A Heated Oxygen Sensors
30 A/C Fuse 10A A/C Relay
31 TBC I Fuse 10A Body Control Module (BCM), and (BAE Only) Theft Deterrent Alarm and Theft Deterrent Module
32 TRAILER Fuse 30A Trailer Connector
33 ABS Fuse 60A Electronic Brake Control Module (EBCM)
34 IGN A Fuse 40A Starter Relay, Ignition Switch
35 BLOWER Fuse 40A Blower Motor Resistor Assembly (HVAC Manual), Blower Motor Control Processor (HVAC Auto)
36 IGN B Fuse 40A Ignition Switch
37 HDLP WASH Relay - Headlamp Washer Pump
38 REAR WASH Relay - Rear Window Washer Fluid Pump
39 FOG LP Relay - Front Fog Lamps
40 HORN Relay - Horns
41 F/PMP Fuel Pump Relay - Fuel Pump
42 W/S WASH Relay - Windshield Washer Fluid Pump
43 HDLP-HI Relay - Body Control Module (BCM)
44 A/C Relay - Headlamp - High Beam - Left
45 FAN Relay - Engine Cooling Fan
46 HDM Relay - Low Beam Headlamps - Daytime Running Lamps
47 STARTER Relay - Starter Solenoid
48 I/P BATT Fuse 125A Fuse Block - Rear
49 EAP Relay - Electronic Adjustable Pedals
50 TRL R TRN Fuse 10A Trailer Connector
51 TRL L TRN Fuse 10A Trailer Connector
52 FLASH Fuse 25A Turn Signal/Hazard Flasher Module
53 EAP Fuse 15A EAP Relay (Early Production)
  HDM Fuse 15A HDM Relay (Late Production)
54 AIR SOL Fuse 15A AIR SOL Relay
55 AIR SOL Relay - Secondary Air Injection (AIR) Solenoid
56 AIR Fuse 60A Secondary Air Injection (AIR) Pump Relay