GMC Acadia Limited Fuse Box: What Each Fuse Does
From the 2017 GMC Acadia Limited owner's manual. 5 fuse boxes listed.
Engine Compartment Fuse Block (Fuses)
| Fuse | Circuit |
|---|---|
| EVEN COILS | Injector coils – even |
| FAN 1 | Cooling fan 1 |
| FAN 2 | Cooling fan 2 |
| * | Trailer brakes/ Headlamp washer (China) |
| FPM | Fuel pump power module |
| FOG LAMP | Fog lamps (GMC) |
| HORN | Horn |
| HTD MIR | Heated exterior rearview mirror |
| HTD STR WHL | Heated steering wheel |
| HUMIDITY/ MAF | Humidity sensor/ MAF sensor |
| HVAC BLWR | HVAC Blower |
| LT HI BEAM | Left high-beam headlamp |
| LT LO BEAM | Left low-beam headlamp |
| LT PRK | Left parking lamp |
| LT TRLR STOP/TRN | Left trailer stoplamp/Turn signal |
| ODD COILS | Injector coils – odd |
| PWR L/GATE | Power liftgate |
| PWR OUTLET | Power outlet |
| RR APO | Rear accessory power outlet |
| RR DEFOG | Rear defogger |
| RR HVAC | Rear climate control system |
| RT HI BEAM | Right high-beam headlamp |
| RT LO BEAM | Right low-beam headlamp |
| RT PRK | Right parking lamp |
| RT TRLR STOP/TRN | Right trailer stoplamp/Turn signal |
| RVC SNSR | Regulated voltage control sensor |
| S/ROOF/ SUNSHADE | Sunroof |
| SERVICE | Service repair |
| SPARE | – |
| STOP LAMPS (CHINA ONLY) | Stoplamps (China only) |
| STRTR | Starter |
| TCM | Transmission control module |
| TRANS | Transmission |
| TRLR BCK/UP | Trailer reverse lamps |
| TRLR BRK | Trailer brake |
| TRLR PRK LAMP | Trailer parking lamps |
| TRLR PWR | Trailer power |
| WPR/WSW | Windshield wipers/ Washer |
Source: owner's manual, PDF page 236.
Engine Compartment Fuse Block (Relays)
| Fuse | Circuit |
|---|---|
| A/C CMPRSR CLTCH | A/C clutch |
| AUX VAC PUMP | Auxiliary vacuum pump |
| CRNK | Crank |
| FAN 1 | Cooling fan 1 |
| FAN 2 | Cooling fan 2 |
| FAN 3 | Cooling fan 3 |
| FOG LAMP | Fog lamps (GMC) |
| HI BEAM | High-beam headlamps |
| HID/ LO BEAM | HID low-beam headlamps |
| HORN | Horn |
| IGN | Ignition – main |
| LT TRLR STOP/TRN | Left trailer stoplamp/Turn signal lamp |
| PRK LAMP | Parking lamps |
| PWR/TRN | Powertrain |
| RR DEFOG | Rear window defogger |
| RT TRLR STOP/TRN | Right trailer stoplamp/Turn signal lamp |
| STOP LAMPS (CHINA ONLY) | Stoplamps (China only) |
| TRLR BCK/UP | Trailer reverse lamps |
| WPR | Windshield wiper |
| WPR HI | Windshield wiper – high speed |
Source: owner's manual, PDF page 237.
Engine Compartment Fuse Block (Fuses and Relays, second layout)
| Fuse | Circuit |
|---|---|
| FAN 1 | Cooling fan 1 |
| FAN 2 | Cooling fan 2 |
| FOG LAMPS | Fog lamps |
| FPM | Fuel pump power module |
| HORN | Horn |
| HTD MIR | Heated exterior rearview mirror |
| HTD STR WHL | Heated steering wheel |
| HUMIDITY/ MAF | Humidity sensor/ MAF sensor |
| HVAC BLWR | HVAC blower |
| LT HI BEAM | Left high-beam headlamp |
| LT DRL | Left daytime running lamp |
| LT PRK | Left parking lamp |
| LT TRLR STOP/TRN | Left trailer stoplamp/Turn signal |
| ODD COILS | Injector coils – odd |
| PWR L/GATE | Power liftgate |
| PWR OUTLET | Power outlet |
| RR APO | Rear accessory power outlet |
| RR DEFOG | Rear defogger |
| RR HVAC | Rear climate control system |
| RT DRL | Right daytime running lamp |
| RT HI BEAM | Right hi-beam headlamp |
| RT PRK | Right parking lamp |
| RT TRLR STOP/TRN | Right trailer stoplamp/Turn signal |
| RVC SNSR | Regulated voltage control sensor |
| S/ROOF/ SUNSHADE | Sunroof |
| SERVICE | Service repair |
| SPARE | – |
| STRTR | Starter |
| TCM | Transmission control module |
| TRANS | Transmission |
| TRLR BCK/UP | Trailer reverse lamps |
| TRLR BRK | Trailer brake |
| TRLR PRK LAMP | Trailer parking lamps |
| TRLR PWR | Trailer power |
| WPR/WSW | Windshield wipers/ Washer |
| A/C CMPRSR CLTCH | A/C clutch |
| AUX VAC PUMP | Auxiliary vacuum pump |
| CRNK | Crank |
| FAN 1 | Cooling fan 1 |
| FAN 2 | Cooling fan 2 |
| FAN 3 | Cooling fan 3 |
| FOG LAMPS | Fog lamps |
Source: owner's manual, PDF page 239.
Fuse Block (Fuses)
| Fuse | Circuit |
|---|---|
| AIRBAG | Airbag |
| AMP | Amplifier |
| BCK UP/STOP | Reverse lamps/ Stoplamps |
| BCM | Body control module |
| CNSTR VENT | Canister vent |
| CTSY | Courtesy lamps |
| DR LCK | Door locks |
| DRL/ LO BEAM | Daytime running lamps relay/ Low-beam headlamps relay |
| DSPLY | Display |
| FRT WSW | Front windshield washer |
| HTD/ COOL SEAT | Heated/Cooling seats |
| HVAC | HVAC |
| INADV PWR | Inadvertent power/ Interior light pipe lamps |
| INFOTMNT/ MSM | Infotainment/ Memory seat module |
| LT TRN SIG | Left turn signal |
| OBS DET/URS | Rear park assist/ Side blind zone alert/Forward collision alert/ Universal remote system |
| PDM | Power mirrors/ Liftgate release |
| PWR MODE | Power mode |
| PWR MIR | Power mirrors |
| RDO | Radio |
| REAR WPR | Rear wiper |
| RT TRN SIG | Right turn signal |
| STR WHL ILLUM | Steering wheel illumination |
| USB CHRG | USB charging |
Source: owner's manual, PDF page 241.
Fuse Block Relay Side
| Fuse | Circuit |
|---|---|
| LT/ PWR/SEAT | Left power seat relay |
| RT/ PWR/SEAT | Right power seat relay |
| PWR/WNDW | Power windows relay |
| PWR/ COLUMN | Power steering column relay |
| L/GATE | Liftgate relay |
| LCK | Power lock relay |
| REAR/WSW | Rear window washer relay |
| UNLCK | Power unlock relay |
| DRL/ LO BEAM | Daytime running lamps relay/ Low-beam headlamps relay |
| LT/UNLCK | Left unlock relay |
| DRL/ LO BEAM | Daytime running lamps/Low-beam headlamps relay (if equipped) |
| HI SHUTTER | Hi shutter (GMC with halogen lighting) |
| FRT/WSW | Front windshield washer relay |
Source: owner's manual, PDF page 242.
Listings are copied as text from the manual's fuse tables (AI-assisted; every circuit name was matched against the cited pages 2026-10-18). Fuse layouts can differ by trim and year; check the label on the fuse box cover before replacing a fuse, and always use the same amp rating.
Confirm with your own manual, dipstick or door-jamb label.
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