Explore Chevrolet Trailblazer fuse box diagrams in this handy guide designed to help you understand the electrical layout of this compact, tech-forward crossover. Here we cover the Chevrolet Trailblazer (2021–2026) and provide fuse diagrams for 2021, 2022, 2023, 2024, 2025 and 2026 , along with the location of the fuse panels and the assignment of each fuse and relay , giving you a clear reference for troubleshooting and routine electrical checks.
The fuse box is located behind the storage compartment to the left and below the steering wheel.
Assignment of the fuses in the instrument panel
Fuse Data
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No. Description F01 LUMBAR F02 SUNROOF F03 VBAT 3 F04 VBAT 7 F05 VBAT 6 F06 AUTO HVAC F07 CGM F08 ST WHL HTR F09 DISPLAY F10 RADIO F11 ONSTAR F12 PARK ASSIST F13 MAN. HVAC F14 WL CHARGER F15 VBAT 2 F16 VBAT 1 F17 SWC BKLT F18 – F19 – F20 CLOCK SPRING F21 OCC SEN F22 DLC F23 SDM F24 IGN SW/ESCL F25 PWR L-GATE MDL F26 SEC FUSE-2 F27 PWR SEAT CO-DR F28 VBAT 8 F29 DC-DC F30 PWR L-GATE MDL F31 OSRVM F32 FRT HS PWR-1 F33 VBAT 4 F34 FRT HS PWR-2 F35 AMPLIFIER F36 SEC FUSE-1 F37 PWR SEAT DR F38 DC-DC 400W / DC-DC 200W F39 from 2022: SEC FUSE-1 F40 HVAC BLOWER
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Assignment of the circuit breakers in the instrument panel
Fuse Data
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No. Description F41/CB1 – CB2 APO
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Assignment of the relays in the instrument panel
Fuse Data
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No. Description K01 i-RAP ACC K02 RUN K03 LOGISTICS K04 – K05 – K06 –
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It is located next to the battery.
Assignment of the fuses in the engine compartment
Fuse Data
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No. Description F01 – F02 CLSTR F03 – F04 FRT WPR F05 – F06 OSRVM DEFOG F07 L/GATE RELSE F08 AHL AFL MTR1 F09 VENT SEAT F10 – F11 AHL AFL MTR2 F12 – F13 REAR WNDW DEFOG F14 ISRVM REAR VIEW CAMERA F15 DEFC MDL RUN/CRNK F16 HDLP LVL F17 – F18 FTZM F19 – F20 – F21 E-BOOST PWR1 F22 TRLR ST/TRN LT – TRLR F23 STRTR PINION F24 ESCL F25 ECM TCM RUN/CRNK F26 FRT/REAR WSW PUMP F27 IGN COIL – Gasoline; F28 AERO SH F29 AHL AFL MDL F30 STRTR SOL F31 ECM PT2 F32 ENG COMP2 F33 RVC F34 FRT FOG LP F35 ENG COMP1 F36 ECM PT1 F37 AUX OIL PUMP F38 TRLR PRK LAMP – TRLR F39 – F40 AUX WATER PUMP F41 REAR WPR F42 HORN F43 PWR WNDW RT F44 REAR WPR PRK F45 A/C CLTCH F46 – F47 ECM BATT F48 CLOW PLUG F49 HDLP HI LH F50 – F51 HDLP HI RH F52 NOX SOOT SNSR – Diesel; F53 – F54 PEPS F55 PWR WNDW LT F56 CNSTR VENT SOL – Gasoline; F57 DEFC MDL F58 TCM BATT F59 – F60 DEF HTR F61 – F62 FUEL HTR – Diesel F63 – SF01-SF06 Spare Fuses
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Assignment of the relays in the engine compartment
Fuse Data
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No. Description K01 – K02 – K03 RUN/CRNK K04 REAR DEFOG K05 STRTR SOL K06 STRTR PINION K07 A/C CNTRL K08 PT RLY K09 FUEL HTR DSL K10 – K11 –
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The rear compartment fuse block is behind a cover on the driver’s side of the luggage compartment.
Assignment of the fuses in the trunk
Fuse Data
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No. Description F01 – F02 RDCM ELEC F03 – F04 – F05 DC/AC INVERTER F06 – F07 RDCM F08 RR SEAT HEAT PWR1 F09 – F10 RR SEAT HEAT PWR2 F11 – F12 – F13 – F14 – F15 – F16 – F17 – F18 – F19 – F20 – F21 –
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Assignment of the circuit breakers in the trunk
Assignment of the relays in the trunk
No. Description K01 – K02 – K03 – K04 – K05 –
