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Contents
Cigar lighter (power outlet) fuses in the GMC Sierra are the fuses F27, F28, and circuit breakers CB1, CB2, CB3 and CB4 in the Right Instrument panel fuse box.
Table of Contents
The left instrument panel fuse block access door is on the driver side edge of the instrument panel.
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel.
To access the back of the block:
1) Push the tab at the top of fuse block down;
2. Pull the top of the block outward;
3. Reverse Steps 1-2 to reinstall.
Assignment of the fuses in the engine compartment (2019, 2020)
| № | 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 |
Assignment of the fuses in the Left Instrument Panel Fuse Block (2019, 2020)
| № | 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 |
Assignment of the fuses in the Right Instrument Panel Fuse Block (2019, 2020)
| № | 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 |
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