Find fuse box and relay locations for the 2021-2024 Chevrolet TrailBlazer, with diagrams for reference. Key guide to maintain reliable electrical system performance.

The Chevrolet TrailBlazer (2021-2024) is a compact SUV with a sporty, modern design that appeals to drivers seeking a blend of practicality and style. Available in multiple trims, including the sporty RS and off-road-oriented ACTIV, the TrailBlazer offers both two-tone and monochromatic options, emphasizing its versatile and youthful character. With ample interior space, it comfortably accommodates five passengers and offers flexible cargo options, making it ideal for urban driving and weekend getaways.

Supporting the TrailBlazer’s advanced technology and convenience features, the electrical system depends on well-placed fuse boxes and relays. The main fuse box is located under the hood, while a secondary fuse box is typically found within the cabin, near the driver’s side. Relays within these boxes control high-power functions, such as the starter, headlights, and cooling systems, ensuring these essential features work seamlessly. Routine inspections of the fuse box and relays help maintain the vehicle’s reliability and performance.

MUST READ: DYI – How to Check Car Fuses?

(2021-2024) Chevrolet TrailBlazer fuse box and relay with Diagram

WARNING

  • Never replace a fuse with one that has a higher amperage rating.
  • A fuse with a too-high amperage could damage the electrical part and cause a fire.
  • On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
  • If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
  • Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Chevrolet TrailBlazer 2021-2024 fuse assignment

Chevrolet TrailBlazer Year of production: 2021, 2022, 2023, 2023

Chevrolet TrailBlazer (2021-2024): Instrument panel fuse box location

Instrument Panel Fuse Block:

The instrumental panel fuse block is situated beneath the driver’s side panel, close to the vehicle’s front. In order to extract the fuses, there is a provision positioned on the top of the cover; simply press on it and the storage compartment can be dislodged from the panel.

Chevrolet TrailBlazer (2021-2024): Engine compartment fuse box location

Engine Compartment Fuse Block:

To remove the fuse block cover, squeeze the clip and lift it up.

Chevrolet TrailBlazer (2021-2024): Rear compartment fuse box location

Rear Compartment Fuse Block:

The rear compartment fuse block is behind a cover on the driver side of the rear compartment. To access the fuses, remove the cover.


Fuse Box Diagrams

2021

Instrument Panel Fuse Block
Chevrolet TrailBlazer (2021): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2021)

Usage
F01LUMBAR
F02SUNROOF
F03VBAT_3
F04VBAT_7
F05VBAT_6
F06AUTO HVAC
F07CGM
F08ST_WHL_HTR
F09DISPLAY
F10RADIO
F11ONSTAR
F12PARK_ASSIST
F13MAN. HVAC
F14WL CHARGER
F15VBAT_2
F16VBAT_1
F17SWC BKLT
F18
F19
F20CLOCK SPRING
F21OCC SEN
F22DLC
F23SDM
F24ICN_SW/ESCL
F25PWR L-GATE MDL
F26SEC FUSE-2
F27PWR SEAT CO-DR
F28VBAT_8
F29DC-DC AT
DC-DC MT
F30PWR L-GATE MDL
F31OSRVM
F32FRT HS PWR-1
F33VBAT_4
F34FRT HS PWR-2
F35AMPLIFIER
F36SEC FUSE-1
F37PWR SEAT DR
F38DC-DC 400W
DC-DC 200W
F39
F40HVAC_BLOWER
Circuit Breakers
CB1N/A
CB2APO
Relays
K01i-RAP_ACC
K02RUN
K03LOGISTICS
K04
K05
K06
Engine Compartment Fuse Block
Chevrolet TrailBlazer (2021): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2021)

Usage
Micro Fuses
F02CLSTR
F03
F06OSRVM DEFOG
F07L/CATE RELSE
F08AHL AFL MTR1
F09VENT SEAT
F10
F11AHL AFL MTR2
F12
F14ISRVM REAR VIEW CAMERA
F15DEFC MDL RUN/CRNK
F16HDLP LVL
F17N/A – DSL
F18FTZM
F19
F20
F22TRLR ST/TRN LT – TRLR
F24ESCL
F25ECM TCM RUN/CRNK
F26FRT/REAR WSW PUMP
F27IGN COIL- GAS
ECM PT3 – DSL
F28AERO SH
F29AHL AFL MDL
F31ECM PT2
F32ENG COMP2
F33RVC
F34FRT FOG LP
F35ENG COMP1
F36ECM PT1
F38TRLR PRK LAMP – TRLR
F40AUX WATER PUMP
F41REAR WPR
F42HORN
F44REAR WPR PRK
F45A/C CLTCH
F46
F47ECM BATT – GAS
ECM BATT – DSL
F49HDLP HI LH
F50
F51HDLP HI RH
F52NOX SOOT SNSR – DSL
TRLR ST/TRN RT – TRLR
F53
F54PEPS
F56CNSTR VENT SOL – GAS
DEFC MDL – DSL
F57DEFC MDL
F58TCM BATT
SF1-SF6SPARE FUSES
ET Fuses
F48GLOW PLUG
J-Case Fuses
F01
F05
F13REAR WNDW DEFOG
F21E-BOOST PWR1
F23STRTR PINION
F59
F62FUEL HTR DSL
F63
M-case Fuses
F04FRT WPR
F30STRTR SOL
F37AUX OIL PUMP
F39
F43PWR WNDW RT
F55PWR WNDW LT
F60DEF HTR
F61
Mini Relays
K03RUN/CRNK
K04REAR DEFOG
K06STRTR PINION
K08PT RLY
K09FUEL HTR DSL
HC Micro Relays
K01
K02
K05STRTR SOL
K07A/C CNTRL
K10
Ultra Micro Relays
K11
Rear Compartment Fuse Block
Chevrolet TrailBlazer (2021): Rear compartment fuse box location

List of fuses in the Rear Compartment Fuse Block (2021)

Usage
F01
F02RDCM ELEC
F03
F04
F05DC/AC INVERTER
F06
F07RDCM
F08RR SEAT HEAT PWR1
F09
F10RR SEAT HEAT PWR2
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
Circuit Breakers
CB1
Relays
K01
K02
K03
K04
K05

2022

Instrument Panel Fuse Block
Chevrolet TrailBlazer (2022): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2022)

Usage
F01LUMBAR
F02SUNROOF
F03VBAT_3
F04VBAT_7
F05VBAT_6
F06AUTO HVAC
F07CGM
F08ST_WHL_HTR
F09DISPLAY
F10RADIO
F11ONSTAR (ERA)
F12PARKASSIST
F13MAN. HVAC
F14WL CHARGER
F15VBAT_2
F16VBAT_1
F17SWC BKLT
F18
F19
F20CLOCK SPRING
F21OCC SEN
F22DLC
F23SDM
F24ICN_SW/ESCL
F25PWR L-GATE MDL
F26SEC FUSE-2
F27PWR SEAT CO-DR
F28VBAT_8
F29DC-DC AT
F30PWR L-GATE MDL
F31OSRVM
F32FRT HS PWR-1
F33VBAT_4
F34FRT HS PWR-2
F35AMPLIFIER
F36ONSTAR (TCP)
F37PWR SEAT DR
F38DC-DC_400W
F39SEC FUSE-1
F40HVAC_BLOWER
Circuit Breakers
CB1
CB2APO
Relays
K01i-RAP_ACC
K02RUN
K03LOGISTICS
K04
K05
K06
Engine Compartment Fuse Block
Chevrolet TrailBlazer (2022): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2022)

Usage
Micro Fuses
F02CLSTR
F03
F06OSRVM DEFOG
F07L/GATE RELSE
F08AHL AFL MTR1
F09VENT SEAT
F10
F11AHL AFL MTR2
F12
F14ISRVM REAR VIEW CAMERA
F15DEFC MDL RUN/CRNK
F16HDLP LVL
F17N/A – DSL
F18FTZM
F19
F20
F22TRLR ST/TRN LT – TRLR
F24ESCL
F25ECM TCM RUN/CRNK
F26FRT/REAR WSW PUMP
F27IGN COIL – GAS
ECM PT3 – DSL
F28AERO SH
F29AHL AFL MDL
F31ECM PT2
F32ENG COMP2
F33RVC
F34FRT FOG LP
F35ENG COMP1
F36ECM PT1
F38TRLR PRK LAMP – TRLR
F40AUX WATER PUMP
F41REAR WPR
F42HORN
F44REAR WPR PRK
F45A/C CLTCH
F46
F47ECM BATT – GAS
ECM BATT – DSL
F49HDLP HI LH
F50
F51HDLP HI RH
F52NOX SOOT SNSR – DSL
TRLR ST/TRN RT – TRLR
F53N/A
F54PEPS
F56CNSTR VENT SOL – GAS
DEFC MDL – DSL
F57DEFC MDL-DSL
F58TCM BAH
SF1-SF6SPARE FUSES
ET Fuses
F48GLOW PLUG
J-Case Fuses
F01
F05
F13REAR WNDW DEFOG
F21E-BOOST PWR1
F23STRTR PINION
F59
F62FUEL HTR DSL
F63
M-case Fuses
F04FRT WPR
F30STRTR SOL
F37AUX OIL PUMP
F39
F43PWR WNDW RT
F55PWR WNDW LT
F60DEF HTR
F61
Mini Relays
K03RUN/CRNK
K04REAR DEFOG
K06STRTR PINION
K08PT RLY
K09FUEL HTR DSL
HC Micro Relays
K01
K02
K05STRTR SOL
K07A/C CNTRL
K10
Ultra Micro Relays
K11
Rear Compartment Fuse Block
Chevrolet TrailBlazer (2022): Rear compartment fuse box location

List of fuses in the Rear Compartment Fuse Block (2022)

Usage
F01
F02RDCM ELEC
F03
F04
F05DC/AC INVERTER
F06
F07RDCM
F08RR SEAT HEAT PWR1
F09
F10RR SEAT HEAT PWR2
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
Circuit Breakers
CB1
Relays
K01
K02
K03
K04
K05

2023

Instrument Panel Fuse Block
Chevrolet TrailBlazer (2023): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2023)

Usage
F01LUMBAR
F02SUNROOF
F03VBAT_3
F04VBAT_7
F05VBAT_6
F06AUTO HVAC
F07CGM
F08ST_WHL_HTR
F09DISPLAY
F10RADIO
F11ONSTAR (ERA)
F12PARK_ASSIST
F13MAN. HVAC
F14WL CHARGER
F15VBAT_2
F16VBAT_1
F17SWC BKLT
F18
F19
F20CLOCK SPRING
F21OCC SEN
F22DLC
F23SDM
F24IGN_SW/ESCL
F25PWR L-GATE MDL
F26SEC FUSE-2
F27PWR SEAT CO-DR
F28VBAT_8
F29DC-DC AT
F30PWR L-GATE MDL
F31OSRVM
F32FRT HS PWR-1
F33VBAT_4
F34FRT HS PWR-2
F35AMPLIFIER
F36ONSTAR (TCP)
F37PWR SEAT DR
F38DC-DC_400W
F39SEC FUSE-1
F40HVAC_BLOWER
Circuit Breakers
CB1
CB2APO
Relays
K01i-RAP_ACC
K02RUN
K03LOGISTICS
K04
K05
K06
Engine Compartment Fuse Block
Chevrolet TrailBlazer (2023): Engine compartment fuse box diagram

Type 1List of fuses in the Engine Compartment Fuse Block (Type 1) (2023)

Usage
Micro Fuses
F02CLSTR
F03
F06OSRVM DEFOG
F07L/CATE RELSE
F08AHL AFL MTR1
F09VENT SEAT
F10
F11AHL AFL MTR2
F12
F14ISRVM REAR VIEW CAMERA
F15DEFC MDL RUN/CRNK
F16HDLP LVL
F17N/A – DSL
F18FTZM
F19
F20
F22TRLR ST/TRN LT – TRLR
F24ESCL
F25ECM TCM RUN/CRNK
F26FRT/REAR WSW PUMP
F27IGN COIL – GAS
ECM PT3 – DSL
F28AERO SH
F29AHL AFL MDL
F31ECM PT2
F32ENG COMP2
F33RVC
F34FRT FOG LP
F35ENG COMP1
F36ECM PT1
F38TRLR PRK LAMP – TRLR
F40AUX WATER PUMP
F41REAR WPR
F42HORN
F44REAR WPR PRK
F45A/C CLTCH
F46
F47ECM BATT – GAS
ECM BATT – DSL
F49HDLP HI LH
F50
F51HDLP HI RH
F52NOX SOOT SNSR – DSL
TRLR ST/TRN RT – TRLR
F5B
F54PEPS
F56CNSTR VENT SOL – GAS
DEFC MDL – DSL
F57DEFC MDL-DSL
F58TCM BATT
SF1-SF6SPARE FUSES
ET Fuses
F48GLOW PLUG
J-Case Fuses
F01
F05
F13REAR WNDW DEFOG
F21E-BOOST PWR1
F23STRTR PINION
F59
F62FUEL HTR DSL
F63N/A
M-case Fuses
F04FRT WPR
F30STRTR SOL
F37AUX OIL PUMP
F39
F43PWR WNDW RT
F55PWR WNDW LT
F60DEF HTR
F61
Mini Relays
K03RUN/CRNK
K04REAR DEFOG
K06STRTR PINION
K08PT RLY
K09FUEL HTR DSL
HC Micro Relays
K01
K02
K05STRTR SOL
K07A/C CNTRL
K10
Ultra Micro Relays
K11

Type 2List of fuses in the Engine Compartment Fuse Block (Type 2) (2023)

Usage
Micro Fuses
F02CLSTR
F03
F06OSRVM DEFOG
F07L/GATE RELSE
F08
F09VENT SEAT
F10
F11
F12
F14ISRVM REAR VIEW CAMERA
F15
F16HDLP LVL
F17
F18FTZM
F19
F20
F22TRLR ST/TRN LT – TRLR
F24ESCL
F25ECM TCM RUN/CRNK
F26FRT/REAR WSW PUMP
F27IGN COIL – GAS
F28AERO SH
F29AHL AFL MDL
F31ECM PT2
F32ENG COMP2
F33RVC
F34FRT FOG LP
F35ENG COMP1
F36ECM PT1
F38TRLR PRK LAMP – TRLR
F40
F41REAR WPR
F42HORN
F44REAR WPR PRK
F45A/C CLTCH
F46
F47ECM BATT – GAS
F49HDLP HI LH
F50
F51HDLP HI RH
F52TRLR ST/TRN RT – TRLR
F53AUX WATER PUMP
F54PEPS
F56CNSTR VENT SOL – GAS / DEFC
F57
F58TCM BATT
SF1-SF6SPARE FUSES
ET Fuses
F48
J-Case Fuses
F01
F05
F13REAR WNDW DEFOG
F21E-BOOST PWR1
F23STRTR PINION
F59
F62
F63
M-case Fuses
F04FRT WPR
F30STRTR SOL
F37AUX OIL PUMP
F39
F43PWR WNDW RT
F55PWR WNDW LT
F60
F61
Mini Relays
K03RUN/CRNK
K04REAR DEFOG
K06STRTR PINION
K08PT RLY
K09
HC Micro Relays
K01
K02
K05STRTR SOL
K07A/C CNTRL
K10
Ultra Micro Relays
K11
Rear Compartment Fuse Block
Chevrolet TrailBlazer (2023): Rear compartment fuse box location

List of fuses in the Rear Compartment Fuse Block (2023)

Usage
F01
F02RDCM ELEC
F03
F04
F05DC/AC INVERTER
F06
F07RDCM
F08RR SEAT HEAT PWR1
F09
F10RR SEAT HEAT PWR2
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
Circuit Breakers
CB1
Relays
K01
K02
K03
K04
K05

2024

Instrument Panel Fuse Block
Chevrolet TrailBlazer (2024): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2024)

Usage
F01LUMBAR
F02SUNROOF
F03VBAT_3
F04VBAT_7
F05VBAT_6
F06AUTO HVAC
F07CGM
F08ST WFHL HTR
F09DISPLAY
F10RADIO
F11ONSTAR (ERA)
F12PARK_ASSIST
F13MAN. HVAC
F14WL CHARGER
F15VBAT_2
F16VBAT_1
F17SWC BKLT
F18
F19
F20CLOCK SPRING
F21OCC SEN
F22DLC
F23SDM
F24IGN_SW/ESCL
F25PWR L-GATE MDL
F26SEC FUSE-2
F27PWR SEAT CO-DR
F28VBAT_8
F29DC-DC AT
F30PWR L-GATE MDL
F31OSRVM
F32FRT HS PWR-1
F33VBAT_4
F34FRT HS PWR-2
F35AMPLIFIER
F36ONSTAR (TCP)
F37PWR SEAT DR
F38DC-DC_400W
F39SEC FUSE-1
F40HVAC_BLOWER
Circuit Breakers
CB1
CB2APO
Relays
K01i-RAP_ACC
K02RUN
K03LOGISTICS
K04
K05
K06
Engine Compartment Fuse Block
Chevrolet TrailBlazer (2024): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2024)

Usage
Micro Fuses
F02CLSTR
F03
F06OSRVM DEFOG
F07L/CATE RELSE
F08
F09VENT SEAT
F10
F11
F12
F14ISRVM REAR VIEW CAMERA
F15
F16HDLP LVL
F17
F18FTZM
F19
F20
F22TRLR ST/TRN LT – TRLR
F24ESCL
F25ECM TCM RUN/CRNK
F26FRT/REAR WSW PUMP
F27IGN COIL – GAS
F28AERO SH
F29AHL AFL MDL
F31ECM PT2
F32ENG COMP2
F33RVC
F34FRT FOG LP
F35ENG COMP1
F36ECM PT1
F38TRLR PRK LAMP – TRLR
F40
F41REAR WPR
F42HORN
F44REAR WPR PRK
F45A/C CLTCH
F46
F47ECM BATT – GAS
F49HDLP HI LH
F50
F51HDLP HI RH
F52TRLR ST/TRN RT – TRLR
F53AUX WATER PUMP
F54PEPS
F56CNSTR VENT SOL – GAS
F57
F58TCM BATT
SF1-SF6SPARE FUSES
ET Fuses
F48
J-Case Fuses
F01
F05
F13REAR WNDW DEFOG
F21E-BOOST PWR1
F23STRTR PINION
F59
F62
F63
M-case Fuses
F04FRT WPR
F30STRTR SOL
F37AUX OIL PUMP
F39
F43PWR WNDW RT
F55PWR WNDW LT
F60
F61
Mini Relays
K03RUN/CRNK
K04REAR DEFOG
K06STRTR PINION
K08PT RLY
K09
HC Micro Relays
K01
K02
K05STRTR SOL
K07A/C CNTRL
K10
Ultra Micro Relays
K11
Rear Compartment Fuse Block
Chevrolet TrailBlazer (2024): Rear compartment fuse box location

List of fuses in the Rear Compartment Fuse Block (2024)

Usage
F01
F02RDCM ELEC
F03
F04
F05DC/AC INVERTER
F06
F07RDCM
F08RR SEAT HEAT PWR1
F09
F10RR SEAT HEAT PWR2
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
Circuit Breakers
CB1
Relays
K01
K02
K03
K04
K05

Conclusion

The Chevrolet TrailBlazer (2021-2024) offers style and versatility for compact SUV enthusiasts. Proper maintenance of its fuse box and relays ensures dependable operation of all key systems.

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