GMC Sierra (2019 – 2020) – fuse box diagram
Year of production: 2019, 2020
Engine Compartment Fuse Block
The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle.
| № | Usage |
|---|---|
| 1 | High-beam left |
| 2 | High-beam right |
| 3 | Headlamp left |
| 4 | Headlamp right |
| 6 | TIM |
| 7 | Not Used |
| 8 | Fog lamp |
| 9 | VKM |
| 10 | Not Used |
| 11 | Police upfitter |
| 12 | Not Used |
| 13 | Washer front |
| 14 | Washer rear |
| 15 | MSB driver |
| 16 | Not Used |
| 17 | IECL 1 |
| 19 | DC/AC inverter |
| 20 | 2019: IECR 2 2020: IECR 2 (LD) / EBCM2 (HD) |
| 21 | MSB pass |
| 22 | IECL 2 |
| 24 | 2019: Eboost 1 2020: EBCM 1 |
| 25 | REC |
| 26 | Not Used |
| 27 | Horn |
| 28 | Not Used |
| 29 | Not Used |
| 30 | Not Used |
| 31 | Not Used |
| 32 | Rear window defogger |
| 33 | Heated mirror |
| 34 | Parking lamp left |
| 37 | Euro trailer |
| 38 | TIM |
| 39 | Not Used |
| 40 | Misc ignition |
| 41 | Trailer parking lamp |
| 42 | Park lamp right |
| 44 | Not Used |
| 45 | Second fuel pump |
| 46 | Engine control module ignition |
| 47 | Transmission control module ignition |
| 48 | Not Used |
| 49 | Transmission control module |
| 50 | A/C clutch |
| 51 | Transfer case control module |
| 52 | Front wiper |
| 53 | Center high-mounted stop lamp |
| 54 | Trailer reverse lamp |
| 55 | Trailer back-up lamp |
| 56 | SADS |
| 57 | TTPM |
| 58 | 2019: Starter motor 2020: Starter motor (LD & HD DSL) |
| 60 | Active fuel management 1 |
| 61 | VES |
| 62 | Integrated chassis control module/CVS |
| 63 | Trailer battery |
| 65 | Auxiliary underhood electrical center |
| 66 | Cooling fan motor left |
| 67 | Active fuel management 2 |
| 68 | Not Used |
| 69 | 2019: Starter pinion 2020: Starter Pinion (LD) / Starter Motor (HD Gas) |
| 71 | Cooling fan |
| 72 | Cooling fan right |
| 73 | Trailer stop/turn lamp left |
| 74 | TIM |
| 75 | DEFC |
| 76 | Electric RNG BDS |
| 78 | Engine control module |
| 79 | Auxiliary battery |
| 80 | Cabin cooling pump |
| 81 | Trailer stop/turn lamp right |
| 82 | TIM |
| 83 | FTZM |
| 84 | Trailer brake |
| 85 | ENG |
| 86 | Engine control module |
| 87 | Injector B even |
| 88 | O2 B sensor |
| 89 | O2 A sensor |
| 90 | Injector A odd |
| 91 | Engine control module throttle control |
| 92 | Cool fan clutch |
| Relays | |
| 5 | Headlamp |
| 18 | DC/AC inverter |
| 23 | Rear window defogger |
| 35 | Parking lamp |
| 36 | Run/Crank |
| 43 | Second fuel pump |
| 59 | A/C clutch |
| 64 | 2019: Starter motor. 2020: Starter Motor (LD & HD DSL) / Cool Fan Clutch (HD Gas) |
| 70 | 2019: Starter pinion. 2020: Starter Pinion (LD) / Starter Motor (HD Gas) |
| 77 | Powertrain |
Instrument Panel Fuse Block (Left)
| № | Usage |
|---|---|
| F1 | Rear heated seats left/right |
| F3 | Euro trailer |
| F4 | Not Used |
| F5 | Front Bolster |
| F6 | Heated and cooled seats left/right |
| F8 | Rear seat entertainment/Theft deterrent |
| F9 | Passive entry/Passive start/Driver seat module |
| F10 | Not Used |
| F11 | Sunshade |
| F12 | Passenger power seat |
| F13 | Export power take off/ Special equipment option 1 |
| F14 | Not Used |
| F15 | Not Used |
| F16 | AMP |
| F17 | MFEG |
| F18 | Not Used |
| F20 | Endgate |
| F22 | Rear sliding window |
| F23 | Not Used |
| F24 | Not Used |
| F25 | Not Used |
| F26 | Not Used |
| F27 | Not Used |
| Circuit Breakers | |
| CB1 | Not Used |
| Relays | |
| K1 | Rear sliding window open |
| K2 | Rear sliding window close |
| K3 | MFEG major 1 |
| K4 | MFEG minor 1 |
| K5 | MFEG minor 2 |
| K6 | MFEG major 2 |
| K7 | Anti-theft |
| K8 | Not Used |
Instrument Panel Fuse Block (Right)
| № | Usage |
|---|---|
| F1 | Right doors |
| F2 | Left doors |
| F3 | Universal remote system |
| F4 | Not Used |
| F5 | Not Used |
| F6 | Front blower |
| F8 | Lumbar switch |
| F9 | Not Used |
| F10 | Body control module 6/Body control module 7 |
| F11 | Seat/CLM |
| F12 | Body control module 3/Body control module 5 |
| F14 | Mirrors/Windows module |
| F17 | Steering wheel controls |
| F18 | VPM/OBS DET |
| F19 | DLIS |
| F20 | Cooled seats |
| F21 | NOT R/C |
| F22 | Heated steering wheel |
| F23 | MISC R/C |
| F24 | Instrument panel cluster ignition/ Overhead |
| F25 | Heating, ventilation, and air conditioning ignition/Heating, ventilation, and air conditioning auxiliary |
| F26 | USB ports/Special equipment option retained accessory power |
| F27 | Accessory power outlet/retained accessory power |
| F28 | Accessory power outlet/Battery |
| F30 | Sensing and diagnostic module/ Parking brake |
| F31 | Body control module 4 |
| F32 | Special equipment option/Data link connection |
| F33 | Body control module 8 |
| F34 | Cargo lamp |
| F40 | CGM |
| F41 | Infotainment 1 |
| F42 | TCP |
| F43 | Not Used |
| F44 | AVM |
| F45 | Body control module 2 |
| F46 | Heating, ventilation, and air conditioning/ Battery 1 |
| F47 | Instrument panel cluster/Battery |
| F48 | Transmission control module |
| F49 | Body control module 1 |
| F50 | Not Used |
| F51 | Battery 1 |
| F52 | Battery 2 |
| F53 | Not Used |
| F54 | Sunroof |
| F55 | Driver power seat |
| F56 | DC DC TRANS 1 |
| F57 | DC DC TRANS 2 |
| F58 | Infotainment 2 |
| Circuit Breakers | |
| CB1 | Accessory power outlet 2 |
| CB2 | Accessory power outlet 1/Cigarette Lighter |
| CB3 | Accessory power outlet 3 |
| CB4 | Accessory power outlet 4 |
| Relays | |
| K1 | Run/Crank |
| K2 | Retained accessory power/Accessory 1 |
| K4 | Retained accessory power/Accessory 2 |
| K5 | Not Used |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.