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Fuse Block - Underhood Label

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Fuse Block - Underhood Label
GM2126701Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood Label Usage - Diesel

No. Device Rating Description
1 ESC/ALC EXH Fuse 30A Not Used
2 TRLR STOP LT Fuse 10A Trailer Wiring, Auxiliary Body Control Module (XBCM) (EXP)
3 ENG Fuse 15A Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
4 TRLR STOP RT Fuse 10A Trailer Wiring, Auxiliary Body Control Module (XBCM) (EXP)
5 FRT WASH Fuse 15A Windshield Washer Fluid Pump
6 FUEL HTR Fuse 15A Glow Plug Control Module (GPCM), Fuel Heater
7 TCM-BATT Fuse 15A Transmission Control Module (TCM)
8 ABS 2 Fuse 25A Electronic Brake Control Module (EBCM)
9 TRLR BCK/UP Fuse 10A Trailer Wiring, Backup Alarm (8S3)
10 LO HDLP-LT Fuse 20A Headlamp - Left Low Beam
11 ECM-BATT Fuse 10A Engine Control Module (ECM)
12 DSL ECM Fuse 25A Engine Control Module (ECM)
13 TRANS IGN 1 Fuse 15A Transmission Control Module (TCM), Front Drive Axle Actuator (NQF/NQG)
14 VEH BCK/UP Fuse 10A Backup Lamp - Left, Backup Lamp - Right
15 LO HDLP-RT Fuse 20A Headlamp - Right Low Beam
16 A/C CMPRSR Fuse 10A A/C Compressor Clutch
17 ECM/THROT CONT Fuse 15A Engine Control Module (ECM)
18 FUEL PUMP Fuse 20A Fuel Pump and Sender Assembly - Front, Fuel Pump
19 ITBC Fuse 15A Integrated Trailer Brake Control Module (JL1)
20 HDLP WASH Fuse 20A Not Used
21 REAR WASH Fuse 15A Not Used
22 TRLR PRK Fuse 15A Trailer Wiring
23 LT PRK Fuse 15A License Lamp - Left, Marker Lamp - LF (Z88), Park/Turn Signal Lamp - LF Upper, Park/Turn Signal Lamp - LF Lower, Marker Lamp - LR (Z88), Tail/Stop and Turn Signal Lamp - Lower Left, Tail/Stop and Turn Signal Lamp - Upper Left, Clearance Lamp - LF (RO5), Clearance Lamp - LR (R05), Clearance Lamp (U01), Roof Marker Lamp - Left (U01), Roof Marker Lamp - Right (U01)
24 RT PRK Fuse 15A Marker Lamp - RF (Z88), Park/Turn Signal Lamp - RF Upper, Park/Turn Signal Lamp - RF Lower, Tail/Stop and Turn Signal Lamp - Lower Right, Tail/Stop and Turn Signal Lamp - Lower Right, Marker Lamp - RR (Z88), License Lamp - Right, Clearance Lamp - RF (R05), Clearance Lamp - RR (R05), Marker Lamp - Tailgate
25 FOG LAMP Fuse 15A Fog Lamp - Left Front (T96), Fog Lamp - Right Front (T96)
26 HORN Fuse 15A Horn - Left, Horn - Right (7Z1/YE9)
27 HI HEADLAMP-RT Fuse 10A Headlamp - Right High Beam
28 DRL Fuse 15A DRL 2 Fuse
29 HI HEADLAMP-LT Fuse 10A Headlamp - Left High Beam
30 DRL 2 Fuse 15A LO HDLP - LT Fuse, LO HDLP - RT Fuse
31 S/ROOF Fuse 30A Sunroof Module (CF5), Roof Beacon Relay (TRW)
32 DLIS Fuse 2A Ignition Switch, Theft Deterrent Module (TDM)
33 WPR Fuse 25A WIPER CONTROL PCB Relay
34 SEO B2 Fuse 30A Emergency Vehicle Roof Lamp Relay (5Y0)
35 EAP Fuse 15A PARK ENABLE PCB Relay, ELECTRONIC ADJUSTABLE PEDALS PCB Relay
36 HVAC BATT Fuse 10A HVAC Control Module
37 AIRBAG IGN Fuse 10A Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Passenger Air Bag ON/OFF Indicator, Inflatable Restraint I/P Module Disable Switch (C99)
38 AMP Fuse 30A Audio Amplifier (UQA)
39 RDO Fuse 15A Digital Radio Receiver (U2K), Radio, Rear Seat Audio (RSA) Control (UK6), Chime Module (UL5)
40 MISC IGN Fuse 10A Auxiliary Body Control Module (XBCM) (EXP), Stop Lamp Switch, Transfer Case Shift Control Module (NQF/NQH), Trailer Brake Control Module (JL1)
41 L/GATE RELSE Fuse 15A Not Used
42 AIRBAG BATT Fuse 15A Inflatable Restraint Passenger Presence System (PPS) Module, Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Vehicle Rollover Sensor (ASF)
43 IPC Fuse 10A Body Control Module (BCM), Instrument Panel Cluster (IPC)
44 EXP/PTO Fuse 15A Auxiliary Body Control Module (XBCM) (EXP) Power Take Off Relay (PTO)
45 AUX HVAC-IGN Fuse 10A Instrument Panel Cluster (IPC), Inside Rearview Mirror (ISRVM), Heated Steering Wheel Module Control (KA9)
46 CHMSL Fuse 15A Center High Mounted Stop Lamp (CHMSL)
47 REAR DEFOG Fuse 30A Rear Window Defogger Grid
48 HTD MIR Fuse 15A Outside Rearview Mirror - Driver (DL8/DPN without AN3/DL3), Outside Rearview Mirror - Passenger (DL8/DPN without AN3/DL3)
49 SEO B1 Fuse 15A Auxiliary Body Control Module (XBCM) (EXP), Power Take Off - (PTO) Module, Run Relay (TP2), Security Indicator Lamp, Vehicle Inclination Sensor, Vehicle Shock Sensor
50 LTR Fuse 20A Accessory Power Outlet - I/P 1, Data Link Connector (DLC)
51 SEO/ALC Fuse 10A Not Used
52 HVAC-IGN Fuse 10A Air Temperature Actuator - Left (CJ2), Air Temperature Actuator - Right (CJ2), Air Temperature Actuator (C67), Mode Actuator, Recirculation Actuator (CJ2/C67)
53 ECM-IGN Fuse 15A Engine Control Module (ECM), Fuel Pump Relay - Secondary (LY6 without NQZ), Fuel System Control Module (FSCM)
54 ALC/COMP Fuse 40A Not Used
55 HEAVY DUTY ABS Fuse 60A Electronic Brake Control Module (EBCM)
56 ABS - 1 Fuse 40A Electronic Brake Control Module (EBCM)
57 STRTR Fuse 40A Starter
58 STUD-2 Fuse 30A Blunt Cut Wire, Integrated Trailer Brake Control Relay (JL1)
59 LBEC1 Fuse 60A BCM Fuse, COOLED SEATS Fuse, DDM Fuse, DIM Fuse, DSM Fuse, REAR HVAC Fuse, RT STOP TRN Fuse, WSW PUMP Fuse CTSY Fuse, PWR MIR Fuse
60 ELEC RUN BOARD Fuse 30A Not Used
61 WSW/HTR Fuse 60A Windshield Washer Solvent Heater (XA7)
62 TREC Fuse 30A Transfer Case Shift Control Module (NQF/NQH), Transfer Case Encoder Motor CNQH
63 STUD-1 Fuse 40A Trailer Wiring
64 MBEC1 Fuse 60A DRIVER SEAT 2 Circuit Breaker, PASS SEAT 1 Circuit Breaker, PWR REAR WNDW Circuit Breaker, RT DOORS Circuit Breaker
65 HVAC BLWR Fuse 40A Blower Motor Control Module
66 LGM Fuse 30A Not Used
67 LBEC2 Fuse 60A AUX PWR 2 Fuse, REAR WPR Fuse, PDM Fuse, AUX PWR Fuse, REAR SEAT Fuse, STOP LAMPS Fuse, IS LPS Fuse, LT STOP TRN Fuse ABS DET Fuse, LT DR Circuit Breaker, REAR SEAT ENT Fuse, INFO Fuse, LOCK/UNLOCK PCB Relay
- A/C CMPRSR Relay - A/C CMPRSR Fuse
- FOG LAMP Relay - FOG LAMP Fuse
- FUEL PMP Relay - FUEL PUMP Fuse
- HDLP LO/HID Relay - LO HDLP - LT Fuse, LO HDLP - RT Fuse, DRL 2 Fuse
- PRK LAMP Relay - LT PRK Fuse, RT PRK Fuse, TRLR PRK Fuse
- PWR/TRN Relay - DSL ECM Fuse, ECM/THROT Fuse, ENG Fuse, FUEL HTR Fuse
- REAR DEFOG Relay - REAR DEFOG Fuse, HTD MIR Fuse
- RUN/CRNK Relay - AIRBAG IGN Fuse, AUX HVAC-IGN Fuse, HVAC-IGN Fuse, ECM-IGN Fuse, MISC IGN Fuse, SEO/ALC Fuse, TRANS IGN 1 Fuse
- STRTR Relay - STRTR Fuse
IMPORTANT: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
- BCK/UP LAMP PCB Relay - VEH BCK/UP Fuse, TRLR BCK/UP Fuse
- CHMSL - CHMSL Fuse
- DRL PCB Relay - DRL Fuse
- FRT WASH PCB Relay - FRT WASH Fuse
- HI BEAM PCB Relay - HI HEADLAMP - LT Fuse, HI HEADLAMP - RT Fuse
- HORN PCB Relay - HORN Fuse
- L/GATE PCB Relay - L/GATE RELSE Fuse
- LOCK PCB Relay - LCK 2 Fuse (YE9)
- LOCK/UNLOCK PCB Relay - LCK 1 Fuse, LCK 2 Fuse, UNLCK 1 Fuse, UNLCK 2 Fuse (AU3 without YE9)
- REAR WASH PCB Relay - REAR WASH Fuse
- TRLR LT STOP/TRUN PCB Relay - TRLR STOP LT Fuse
- TRLR RT STOP/TURN PCB Relay - TRLR STOP RT Fuse
- UNLOCK PCB Relay - DRV UNLCK Fuse, UNLCK 1 Fuse, UNLCK 2 Fuse
- WIPER CONTROL PCB Relay - Windshield Wiper Motor
- WIPER SPEED PCB Relay - Windshield Wiper Motor
IMPORTANT: Items listed below are Wiper System diagnostic testing points
- TP92 - Wiper High Speed Test Point
- TP95 - Wiper Low Speed Test Point
Fuse Block - Underhood Label Usage - Gas

No. Device Rating Description
1 TRLR STOP RT Fuse 10A Trailer Wiring, Auxiliary Body Control Module (XBCM) (EXP)
2 ESC/ALC EXH Fuse 30A Not Used
3 TRLR STOP LT Fuse 10A Trailer Wiring, Auxiliary Body Control Module (XBCM) (EXP)
4 ENG Fuse 15A Central Sequential Fuel Injection (Central SFI) (4.3L), Evaporative Emissions (EVAP) Canister Purge Solenoid Valve (4.8L/5.3L/6.0L/6.2L), Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (4.8L/5.3L/6.0L/6.2L), Valve Lifter Oil Manifold (VLOM) Assembly (5.3L/6.0L/6.2L), FAN LO Relay (HP2)
5 ECM/THROT CONT Fuse 15A Engine Control Module (ECM), Evaporative Emission (EVAP) Canister Purse Solenoid Valve (4.3L) Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (4.3L)
6 ITBC Fuse 15A Integrated Trailer Brake Control Module (JL1)
7 FRT WASH Fuse 15A Windshield Washer Fluid Pump
8 O2-B SNSR Fuse 10A Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2, Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
9 ABS 2 Fuse 25A Electronic Brake Control Module (EBCM)
10 TRLR BCK/UP Fuse 10A Trailer Wiring, Backup Alarm (8S3)
11 LO HDLP-LT Fuse 20A Headlamp - Left Low Beam
12 ECM-BATT Fuse 10A Engine Control Module (ECM)
13 INJ-B Fuse 20A Fuel Injector 2, Fuel Injector 4, Fuel Injector 6, Fuel Injector 8, Ignition Coil 2, Ignition Coil 4, Ignition Coil 6, Ignition Coil 8 (except 4.3L)
14 TCM-BATT Fuse 15A Transmission Control Module (TCM) (M30), Evaporative Emission (EVAP) Canister Vent Solenoid Valve, Automatic Transmission (MYC/MYD/M99)
15 VEH BCK/UP Fuse 10A Backup Lamp - Left, Backup Lamp - Right
16 LO HDLP-RT Fuse 20A Headlamp - Right Low Beam
17 A/C CMPRSR Fuse 10A A/C Compressor Clutch
18 O2-A SNSR Fuse 10A Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1, Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
19 TRANS IGN 1 Fuse 15A Transmission Control Module (TCM) (M30), 1-2 Shift Solenoid (SS) Valve, 2-3 Shift Solenoid (SS) Valve, 3-2 Shift Solenoid (SS) Valve (M30), Torque Converter Clutch (TCC) Solenoid Valve (M30), Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve, Input Speed Sensor (ISS), Front Drive Axle Actuator, Automatic Transmission (MYC/MYD/M99), Drive Motor Generator Power inverter module (HP2)
20 FUEL PUMP Fuse 20A Fuel Pump and Sender Assembly - Front, Fuel Pump
21 FSCM Fuse 20A Fuel System Control Module (FSCM) (Gas except 4.3L/LY6/)
22 HDLP WASH Fuse 20A Not Used
23 REAR WASH Fuse 15A Not Used
24 INJ-A Fuse 20A Fuel Injector 1 (except 4.3L), Fuel Injector 3 (except 4.3L), Fuel Injector 5 (except 4.3L), Fuel Injector 7 (except 4.3L), Ignition Coil 1 (except 4.3L), Ignition Coil 3 (except 4.3L), Ignition Coil 5 (except 4.3L), Ignition Coil 7 (except 4.3L), Ignition Control Module (ICM) (4.3L)
25 TRLR PRK Fuse 15A Trailer Wiring
26 LT PRK Fuse 15A License Lamp - Left, Marker Lamp - LF (Z88), Park/Turn Signal Lamp - LF Upper, Park/Turn Signal Lamp - LF Lower, Marker Lamp - LR (Z88), Tail/Stop and Turn Signal Lamp - Lower Left, Tail/Stop and Turn Signal Lamp - Upper Left, Clearance Lamp - LF (RO5), Clearance Lamp - LR (R05), Clearance Lamp (U01), Roof Marker Lamp - Left (U01), Roof Marker Lamp - Right (U01)
27 RT PRK Fuse 15A Marker Lamp - RF (Z88), Park/Turn Signal Lamp - RF Upper, Park/Turn Signal Lamp - RF Lower, Tail/Stop and Turn Signal Lamp - Lower Right, Tail/Stop and Turn Signal Lamp - Lower Right, Marker Lamp - RR (Z88), License Lamp - Right, Clearance Lamp - RF (R05), Clearance Lamp - RR (R05), Marker Lamp - Tailgate
28 FOG LAMP Fuse 15A Fog Lamp - Left Front (T96), Fog Lamp - Right Front (T96)
29 HORN Fuse 15A Horn - Left, Horn - Right (7Z1/YE9)
30 HI HEADLAMP-RT Fuse 10A Headlamp - Right High Beam
31 DRL Fuse 15A DRL 2 Fuse
32 HI HEADLAMP-LT Fuse 10A Headlamp - Left High Beam
33 DRL 2 Fuse 15A LO HDLP - LT Fuse, LO HDLP - RT Fuse
34 S/ROOF Fuse 30A Sunroof Module (CF5), Roof Beacon Relay (TRW)
35 DLIS Fuse 2A Ignition Switch, Theft Deterrent Module (TDM)
36 FRT WPR Fuse 25A WIPER CONTROL PCB Relay
37 SEO B2 Fuse 30A Emergency Vehicle Roof Lamp Relay (5Y0)
38 EAP Fuse 15A PARK ENABLE PCB Relay, ELECTRONIC ADJUSTABLE PEDALS PCB Relay
39 HVAC BATT Fuse 10A HVAC Control Module
40 AIRBAG IGN Fuse 10A Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Passenger Air Bag ON/OFF Indicator, Inflatable Restraint I/P Module Disable Switch (C99)
41 AMP Fuse 30A Audio Amplifier (UQA)
42 RDO Fuse 15A Digital Radio Receiver (U2K), Radio, Rear Seat Audio (RSA) Control (UK6), Chime Module (UL5)
43 MISC IGN Fuse 10A Auxiliary Body Control Module (XBCM) (EXP), Stop Lamp Switch, Transfer Case Shift Control Module (NQF/NQH), Trailer Brake Control Module (JL1), serial Data gateway (SDG) Module (HP2)
44 L/GATE RELSE Fuse 15A Not Used
45 AIRBAG BATT Fuse 15A Inflatable Restraint Passenger Presence System (PPS) Module, Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Vehicle Rollover Sensor (ASF)
46 IPC Fuse 10A Body Control Module (BCM), Instrument Panel Cluster (IPC)
47 EXP/PTO Fuse 15A Auxiliary Body Control Module (XBCM) (EXP)/Power Take Off Relay (PTO)
48 AUX HVAC-IGN Fuse 10A Instrument Panel Cluster (IPC), Inside Rearview Mirror (ISRVM), Heated Steering Wheel Module Control (KA9)
49 CHMSL Fuse 15A Center High Mounted Stop Lamp (CHMSL)
50 REAR DEFOG Fuse 30A Rear Window Defogger Grid
51 HTD MIR Fuse 15A Outside Rearview Mirror - Driver (DL8/DPN without AN3/DL3), Outside Rearview Mirror - Passenger (DL8/DPN without AN3/DL3)
52 SEO B1 Fuse 15A Auxiliary Body Control Module (XBCM) (EXP), Security Indicator Lamp, Vehicle Inclination Sensor, Vehicle Shock Sensor
53 LTR Fuse 20A Accessory Power Outlet - I/P 1, Data Link Connector (DLC)
54 SEO/ALC Fuse 10A Not Used
55 HVAC-IGN Fuse 10A Air Temperature Actuator - Left (CJ2), Air Temperature Actuator - Right (CJ2), Air Temperature Actuator (C67), Mode Actuator, Recirculation Actuator (CJ2/C67)
56 ECM-IGN Fuse 15A Engine Control Module (ECM), Fuel Pump Relay - Secondary (LY6 without NQZ), Fuel Pump Flow Control Module (Gas except 4.3L/LY6), Electronic Brake Control Module (EBCM) (HP2)
57 FAN-1 Fuse 40A FAN LO Relay
58 ALC/COMP Fuse 40A Not Used
59 HEAVY DUTY ABS Fuse 60A Electronic Brake Control Module (EBCM)
60 FAN-2 Fuse 40A FAN HI Relay
61 ABS-1 Fuse 40A Electronic Brake Control Module (EBCM)
62 STRTR Fuse 40A Starter
63 STUD-2 Fuse 30A Blunt Cut Wire, Integrated Trailer Brake Control (JL1)
64 LBEC1 Fuse 60A BCM Fuse, COOLED SEATS Fuse, DDM Fuse, DIM Fuse, DSM Fuse, REAR HVAC Fuse, RT STOP TRN Fuse, WSW PUMP Fuse, CTSY Fuse, PWR MIR Fuse
65 ELEC RUN BOARD Fuse 30A Not Used
66 WSW/HTR Fuse 60A Windshield Washer Solvent Heater (XA7)
67 TREC Fuse 30A Transfer Case Shift Control Module (NQF/NQH), Transfer Case Encoder Motor (NQH)
68 STUD-1 Fuse 40A Trailer Wiring
69 MBEC1 Fuse 60A DRIVER SEAT 2 Circuit Breaker, PASS SEAT 1 Circuit Breaker, PWR REAR WNDW Circuit Breaker, RT DOORS Circuit Breaker
70 HVAC BLWR Fuse 40A Blower Motor Control Module
71 LGM Fuse 30A Not Used
72 LBEC2 Fuse 60A AUX PWR 2 Fuse, REAR WPR Fuse, PDM Fuse, AUX PWR Fuse, REAR SEAT Fuse, STOP LAMPS Fuse, IS LPS Fuse, LT STOP TQN Fuse, OBS DET Fuse, LT DR Circuit Breaker, REAR SEAT ENT Fuse, INFO Fuse, LOCK/UNLCOK PCB Relay
- A/C CMPRSR Relay - A/C CMPRSR Fuse
- FAN CNTRL Relay - Cooling Fan Control
- FAN HI Relay - Cooling Fan - Right
- FAN LO Relay - Cooling Fan - Left
- FOG LAMP Relay - FOG LAMP Fuse
- FUEL PMP Relay - FUEL PUMP Fuse
- HDLP LO/HID Relay - LO HDLP - LT Fuse, LO HDLP - RT Fuse, DRL 2 Fuse
- PRK LAMP Relay - LT PRK Fuse, RT PRK Fuse, TRLR PRK Fuse
- PWR/TRN Relay - ECM/THROT CONT Fuse, ENG Fuse, INJ-A Fuse, INJ-B Fuse, O2-A SNSR Fuse, O2-B SNSR Fuse, FAN CNRTL PCB Relay, FAN HI PCB Relay, FAN LO PCB Relay
- REAR DEFOG Relay - REAR DEFOG Fuse, HTD MIR Fuse
- RUN/CRNK Relay - AIRBAG IGN Fuse, AUX HVAC-IGN Fuse, HVAC-IGN Fuse, ECM-IGN Fuse, MISC IGN Fuse, SEO/ALC Fuse, TRANS IGN 1 Fuse
- STRTR Relay - STRTR Fuse
IMPORTANT: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
- BCK/UP LAMP PCB Relay - VEH BCK/UP Fuse, TRLR BCK/UP Fuse
- CHMSL Relay - CHMSL Fuse
- DRL PCB Relay - DRL Fuse
- FRT WASH PCB Relay - FRT WASH Fuse
- HI BEAM PCB Relay - HI HEADLAMP - LT Fuse, HI HEADLAMP - RT Fuse
- HORN PCB Relay - HORN Fuse
- L/GATE PCB Relay - L/GATE RELSE Fuse
- LOCK PCB Relay - LCK 2 Fuse (YE9)
- LOCK/UNLOCK PCB Relay - LCK 1 Fuse, LCK 2 Fuse, UNLCK 1 Fuse, UNLCK 2 Fuse (AU3 without YE9)
- REAR WASH PCB Relay - REAR WASH Fuse
- TRLR LT STOP/TURN PCB Relay - TRLR STOP LT Fuse
- TRLR RT STOP/TURN PCB Relay - TRLR STOP RT Fuse
- UNLOCK PCB Relay - DRV UNLCK Fuse, UNLCK 1 Fuse, UNLCK 2 Fuse
- WIPER CONTROL PCB Relay - Windshield Wiper Motor
- WIPER SPEED PCB Relay - Windshield Wiper Motor
IMPORTANT: Items listed below are Wiper System diagnostic testing points
- TP92 - Wiper High Speed Test Point
- TP95 - Wiper Low Speed Test Point