FixVault

UNDERHOOD Fuse Block

Underhood fuse block is located in right side of the engine compartment, near the power steering pump. See Fig 1.

Fig 1: Locating Underhood Fuse Block
G00028581Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Underhood Fuse Block Components
G00351769Courtesy of GENERAL MOTORS CORP.
UNDERHOOD FUSE BLOCK LEGEND

No. Fuse/Circuit Breaker Rating Description
1 ALDL Fuse 10A Data Link Connector (DLC), Valet Switch
2 ACCY Fuse 10A Outside Moisture Sensor, Windshield Wiper/Washer Switch
3 WSW Fuse 30A Windshield Wiper Motor
4 - - Not Used
5 HDLOBML Fuse 15A Headlamp - Low Beam - Left
6 HDLOBMR Fuse 15A Headlamp - Low Beam - Right
7 I/P Fuse 15A Ignition Key Cylinder Lamp, Instrument Panel Cluster (IPC), Instrument Panel Integration Module (IPM)
8 PCM BATT Fuse 10A Powertrain Control Module (PCM), Theft Deterrent Module
9 HDHIBMR Fuse 10A Headlamp - High Beam - Right
10 HDHIBML Fuse 10A Headlamp - High Beam - Left
11 IGN 1 Fuse 10A Evaporative Emissions (EVAP) Canister Purge Solenoid, Exhaust Gas Recirculation (EGR) Valve, Mass Air Flow (MAF) Sensor
12 Fog Fuse 10A FOG LP Relay 29
13 TRANS Fuse 10A 1 - 2 Shift Solenoid (1 - 2 SS) Valve, 2 - 3 Shift Solenoid (2 - 3 SS) Valve, Torque Converter Clutch (TCC) Solenoid Valve
14 CR CONT Fuse 10A Cruise Control Module
15 COIL MDL Fuse 20A Ignition Control Module (ICM) Bank 1, Ignition Control Module (ICM) Bank 2
16 INJR2 Fuse 10A Fuel Injector 2, Fuel Injector 3, Fuel Injector 5, Fuel Injector 8
17-18 - - Not Used
19 PCM IGN Fuse 20A Powertrain Control Module (PCM)
20 OXY SENS Fuse 10A Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2, Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
21 INJR1 Fuse 10A Fuel Injector 1, Fuel Injector 4, Fuel Injector 6, Fuel Injector 7
22 AUX PWR Fuse 20A Auxiliary Power Outlet
23 C/LTR Fuse 20A Cigar Lighter, Cigar Lighter - Rear
24 DRL Fuse 15A DRL Relay 30, FOG LP Relay 29
25 HORN Fuse 15A HORN Relay 31
26 AC CLU Fuse 15A A/C CLU Relay 32
27 HDLP HI BM Relay - HDHIBML Fuse 10, HDHIBMR Fuse 9
28 HDLP LO BM Relay - HDLOBML Fuse 5, HDLOBMR Fuse 6
29 FOG LP Relay - Fog Lamp - LF, Fog Lamp - RF
30 DRL Relay - Headlamp - High Beam - Left, Headlamp - High Beam - Right
31 HORN Relay - Horn - A Note, Horn - F Note
32 A/C CLU Relay - A/C Compressor Clutch
33 - - Not Used
34 ACCY Relay - ACCY Fuse 2, WSW Fuse 3
35 - - Not Used
36 START 1 Relay - Starter Solenoid
37 COOLFAN 1 Relay - Series circuit function-supplies voltage through the LH cooling fan motor to the RH cooling fan motor for low speed operation
Parallel circuit function-supplies voltage to the LH cooling fan motor for high speed operation
38 IGN 1 Relay - INJR1 Fuse 21, INJR2 Fuse 16, OXY SEN A Fuse, OXY SEN B Fuse, DIS Fuse, CR CONT Fuse, IGN 1 Fuse, PCM IGN Fuse
39 COOL FAN S/P Relay - Series circuit function-connects the LH and RH cooling fan motor circuits together for low speed operation Parallel circuit function-connects the LH cooling fan motor to ground for high speed operation
40 COOLFAN 2 Relay - Parallel circuit function-supplies voltage to the RH cooling fan motor for high speed operation
41 START Circuit Breaker 30A START 1 Relay 36
42 HDLP WASH Circuit Breaker 30A Headlamp Washer Pump Motor (Export)
43 - - Not Used
44 ABS Fuse 50A Electronic Brake Control Module (EBCM)
45 AIR Pump Fuse 50A Secondary Air Injection Pump, Secondary Air Injection Relay
46 COOL FAN 1 Fuse 30A COOL FAN 1 Relay 37
47 COOL FAN 2 Fuse 30A COOL FAN 2 Relay 40, COOL FAN S/P Relay 39
48-52 - - Spare Fuse
53 - - Fuse Puller