Chevrolet TrailBlazer 3rd generation was produced in 2019, 2020, 2021, 2021, 2022, 2023, 2023, 2024, 2025, 2026. In this article we will present a description of Chevrolet TrailBlazer 3 fuses and relays with fuse box diagrams, their locations and photo examples of performance. Let’s note the cigarette lighter fuse.
The design of the fuse and relay boxes and the assignment of fuses and relays may differ from that shown and depends on the year of manufacture and the level of electrical equipment in your vehicle.
Passenger compartment
In the car, the fuse and relay box is located in the lower part of the dashboard, on the driver’s side, behind the glove box.
Diagram
Assignment
| F01 | (LUMBAR) Power seats |
| F02 | (SUNROOF) Sunroof |
| F03 | VBAT 3 – |
| F04 | VBAT 7 – |
| F05 | VBAT 6 – |
| F06 | (AUTO HVAC) Air conditioning system |
| F07 | CGM |
| F08 | (ST WHL HTR – -) Heated steering wheel |
| F09 | DISPLAY |
| F10 | (RADIO) Radio and audio system |
| F11 | ONSTAR |
| F12 | PARK ASSIST – |
| F13 | (MAN. HVAC) Air conditioning system |
| F14 | WL CHARGER |
| F15 | VBAT 2 – |
| F16 | VBAT 1 – |
| F17 | (SWC BKLT) Steering wheel controls backlighting |
| F18 | (N/A) Not applicable |
| F19 | (N/A) Not applicable |
| F20 | CLOCK SPRING |
| F21 | (OCC SEN) Occupant detection system (airbag) |
| F22 | (DLC) Anti-theft system |
| F23 | SDM |
| F24 | (IGN_SW/ESCL) Ignition switch |
| F25 | (PWR L-GATE MDL) Power back door |
| F26 | SEC FUSE-2 |
| F27 | (PWR SEAT CO-DR) Power seats |
| F28 | VBAT 8 – |
| F29 | DC-DC AT DC-DC MT |
| F30 | (PWR L-GATE MDL) Power back door |
| F31 | (OSRVM) Mirror heater |
| F32 | (FRT HS PWR-1) Front Heated Seats Power |
| F33 | VBAT 4 – |
| F34 | (FRT HS PWR-2) Front Heated Seats Power |
| F35 | (AMPLIFIER) Audio system |
| F36 | SEC FUSE-1 |
| F37 | (PWR SEAT DR) Power seats |
| F38 | (DC-DC 400W DC-DC 200W -) DC to DC transformer 400 watts |
| F39 | (N/A) Not applicable |
| F40 | (HVAC BLOWER -) AC blower motor |
| CB1 | (N/A) Not applicable |
| CB2 | (APO) Auxiliary power outlet |
| K01 | i-RAP ACC – |
| K02 | RUN |
| K03 | LOGISTICS |
| K04 | (N/A) Not applicable |
| K05 | (N/A) Not applicable |
| K06 | (N/A) Not applicable |
Engine compartment
Under the hood in the engine compartment, the main fuse and relay box is located on the left-hand side, next to the battery.
Diagram
Designation
| F02 | (CLSTR) Instrument cluster |
| F03 | (N/A) Not applicable |
| F06 | (OSRVM DEFOG) Mirror heater |
| F07 | (L/GATE RELSE) Power back door |
| F08 | (AHL AFL MTR1) Adaptive Forward Lighting |
| F09 | VENT SEAT |
| F10 | (N/A) Not applicable |
| F11 | (AHL AFL MTR2) Adaptive Forward Lighting |
| F12 | (N/A) Not applicable |
| F14 | ISRVM REAR VIEW CAMERA |
| F15 | DEFC MDL RUN/CRNK |
| F16 | (HDLP LVL) Headlights |
| F17 | N/A-DSL |
| F18 | FTZM |
| F19 | (N/A) Not applicable |
| F20 | (N/A) Not applicable |
| F22 | (TRLR ST/TRN LT – TRLR) Trailer lights |
| F24 | (ESCL) Steering lock |
| F25 | ECM TCM RUN/CRNK |
| F26 | (FRT/REAR WSW PUMP) Windshield washer |
| F27 | (IGN COIL-GAS ECM PT3-DSL) Ignition coil |
| F28 | AERO SH |
| F29 | (AHL AFL MDL) Adaptive Forward Lighting |
| F31 | ECM PT2 |
| F32 | (ENG COMP2) Engine control system |
| F33 | (RVC) Regulated Voltage Control Sensor |
| F34 | (FRT FOG LP) Front fog lights |
| F35 | (ENG COMP1) Engine control system |
| F36 | ECM PT1 |
| F38 | (TRLR PRK LAMP – TRLR) Trailer lights |
| F40 | AUX WATER PUMP |
| F41 | (REAR WPR) Rear wiper |
| F42 | (HORN) Horn |
| F44 | (REAR WPR PRK) Rear wiper |
| F45 | (A/C CLTCH) A/C magnetic clutch |
| F46 | (N/A) Not applicable |
| F47 | ECM BATT-GAS ECM BATT-DSL |
| F49 | (HDLP HI LH) Left-hand headlight high beam |
| F50 | (N/A) Not applicable |
| F51 | (HDLP HI RH) Right-hand headlight high beam |
| F52 | NOX SOOT SNSR -DSL TRLR ST/TRN RT – TRLR |
| F53 | (N/A) Not applicable |
| F54 | (PEPS) Passive entry/ passive start (start button) |
| F56 | CNSTR VENT SOL-GAS DEFC MDL-DSL |
| F57 | DEFC MDL |
| F58 | (TCM BATT) Transmission control unit |
| SF01 | (SPARE) Spare fuse |
| SF02 | (SPARE) Spare fuse |
| SF03 | (SPARE) Spare fuse |
| SF04 | (SPARE) Spare fuse |
| SF05 | (SPARE) Spare fuse |
| SF06 | (SPARE) Spare fuse |
| F48 | (GLOW PLUG) Glow plug heater |
| F01 | (N/A) Not applicable |
| F05 | (N/A) Not applicable |
| F13 | (REAR WNDW DEFOG) Rear window defogger |
| F21 | E-BOOST PWR1 |
| F23 | (STRTR PINION) Starter system |
| F59 | (N/A) Not applicable |
| F62 | (FUEL HTR DSL) Fuel heater |
| F63 | (N/A) Not applicable |
| F04 | (FRT WPR) Front wipers |
| F30 | (STRTR SOL) Starter system |
| F37 | AUX OIL PUMP |
| F39 | (N/A) Not applicable |
| F43 | (PWR WNDW RT) Power windows |
| F55 | (PWR WNDW LT) Power windows |
| F60 | (DEF HTR) Rear window defogger |
| F61 | (N/A) Not applicable |
| K03 | RUN/CRNK |
| K04 | (REAR DEFOG) Rear window defogger |
| K06 | (STRTR PINION) Starter system |
| K08 | (PT RLY) Powertrain Relay |
| K09 | (FUEL HTR DSL) Fuel heater |
| K01 | (N/A) Not applicable |
| K02 | (N/A) Not applicable |
| K05 | (STRTR SOL) Starter system |
| K07 | (A/C CNTRL) Air conditioning |
| K10 | (N/A) Not applicable |
| K11 | (N/A) Not applicable |
A high power main fuse block in the form of fusible links is mounted on the plus terminal of the battery.
Luggage compartment
There is another box with fuses and relays in the luggage compartment on the left-hand side, behind the trim.
Diagram
Allocation
| F01 | (N/A) Not applicable |
| F02 | (RDCM ELEC) Rear Drive Control Module (Electrical) |
| F03 | (N/A) Not applicable |
| F04 | (N/A) Not applicable |
| F05 | (DC/AC INVERTER) Power outlet (DC/AC inverter) |
| F06 | (N/A) Not applicable |
| F07 | (RDCM) Rear Drive Control Module |
| F08 | (RR SEAT HEAT PWR1) Rear seat heater |
| F09 | (N/A) Not applicable |
| F10 | (RR SEAT HEAT PWR2) Rear seat heater |
| F11 | (N/A) Not applicable |
| F12 | (N/A) Not applicable |
| F13 | (N/A) Not applicable |
| F14 | (N/A) Not applicable |
| F15 | (N/A) Not applicable |
| F16 | (N/A) Not applicable |
| F17 | (N/A) Not applicable |
| F18 | (N/A) Not applicable |
| F19 | (N/A) Not applicable |
| F20 | (N/A) Not applicable |
| F21 | (N/A) Not applicable |
| CB1 | (N/A) Not applicable |
| K01 | (N/A) Not applicable |
| K02 | (N/A) Not applicable |
| K03 | (N/A) Not applicable |
| K04 | (N/A) Not applicable |
| K05 | (N/A) Not applicable |
Any questions left, write them in the comments.