Engine Coolant
50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System 0 295.
Applies to: Engine Coolant
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 384
Owner’s manual specs
2018 GMC Yukon XL Specs: Oil Capacity, Fluids, Maintenance Schedule & Fuse Box
Figures for the 2018 GMC Yukon XL, copied from GMC’s own owner’s manual. Every one links to the manual page it came from.
From the manufacturer’s manuals. Every figure here is copied from the manufacturer's own manual, with a link to the page it came from. Where a manual is unclear or contradicts itself, we leave the figure out.
Fluids & capacities
All engines
Engine Oil
Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil 0 287.
Applies to: Engine Oil
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 384
5.3L V8
Cooling System
17.8 qt
16.8 L
Applies to: 5.3L V8; 6.2L V8
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 389
Engine Oil with Filter
8 qt
7.6 L
Applies to: 5.3L V8; 6.2L V8 · with filter
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 389
Maintenance schedule
Normal service schedule
Use this for ordinary driving.
| Service | When |
|---|---|
| Replace engine air cleaner filter. (3) Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 378 | Every 45,000 mi(72,000 km) |
| Replace passenger compartment air filter. (1) Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 378 | Every 22,500 mi(36,000 km) |
| Rotate tires and perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 378 | Every 7,500 mi(12,000 km) |
Severe service schedule
Use this if you tow, idle a lot, drive short trips in the cold, or run in dust.
| Service | When |
|---|---|
| Change automatic transmission fluid and filter. Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 380 | Every 45,000 mi(72,000 km) |
| Replace engine air cleaner filter. (3) Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 380 | Every 45,000 mi(72,000 km) |
| Replace passenger compartment air filter. (1) Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 380 | Every 22,500 mi(36,000 km) |
| Rotate tires and perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 380 | Every 7,500 mi(12,000 km) |
Oil life & reset procedures
Engine oil life system reset
Before you start
- Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change.
Steps
- Display the REMAINING OIL LIFE on the DIC. See Driver Information Center (DIC) 0 154.
- Press and hold V. The oil life will change to 100%.
- Display the REMAINING OIL LIFE on the DIC. If the display shows 100%, the system is reset.
- Allow the engine to idle (500- 800 rpm) for at least one minute. Slowly release the brake pedal.
- Keep the engine running and check the transmission fluid temperature on the Driver
- Using the transmission fluid temperature reading, determine and perform the appropriate check procedure. If the transmission fluid temperature reading is not within the required temperature ranges, allow the vehicle to cool, or operate the vehicle until the appropriate transmission fluid temperature is reached.
You’ll know it worked: The oil life will change to 100%.
Use of the incorrect automatic transmission fluid may damage the vehicle, and the damage may not be covered by the vehicle warranty.
(Continued) automatic transmission fluid listed in Recommended Fluids and Lubricants 0 384.
Too much or too little fluid can damage the transmission.
(Continued) transmission to overheat.
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 290
Fuse box locations & fuse chart
Engine Compartment Fuse Block
Where to find it
Engine Compartment Fuse Block The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle.
Lift the cover to access the fuse block.
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 314
What each fuse protects
| Fuse | Amps | Protects | Source |
|---|---|---|---|
| 4 | — | Passenger motorized seat belt | p.316 |
| 5 | — | Suspension leveling compressor | p.316 |
| 6 | — | 4WD transfer case electronic control | p.316 |
| 9 | — | Fuel pump | p.318 |
| 10 | — | Electric parking brake/- | p.316 |
| 13 | — | Interior BEC LT2 | p.316 |
| 14 | — | Rear BEC 1 | p.316 |
| 17 | — | Driver motorized seat belt | p.316 |
| 21 | — | Automatic headlamp leveling/ Exhaust solenoid | p.316 |
| 22 | — | Fuel pump | p.316 |
| 23 | — | Integrated chassis control module | p.316 |
| 24 | — | Real time dampening | p.316 |
| 25 | — | Fuel pump power module | p.316 |
| 26 | — | Active Hydraulic Assist/ Battery regulated voltage control | p.316 |
| 28 | — | Upfitter 2 | p.316 |
| 29 | — | Upfitter 2 | p.318 |
| 30 | — | Wiper | p.316 |
| 31 | — | Trailer interface module | p.316 |
| 35 | — | Antilock brake system valve | p.316 |
| 36 | — | Trailer brakes | p.316 |
| 37 | — | Upfitter 3 | p.318 |
| 39 | — | Right trailer stoplamp/Turn signal lamp | p.316 |
| 40 | — | Left trailer stoplamp/turn signal lamp | p.316 |
| 41 | — | Trailer parking lamps | p.316 |
| 42 | — | Right parking lamps | p.316 |
| 43 | — | Left parking lamps | p.316 |
| 44 | — | Upfitter 3 | p.316 |
| 45 | — | Automatic level control/Run/Crank | p.316 |
| 47 | — | Upfitter 4 | p.316 |
| 48 | — | Upfitter 4 | p.318 |
| 49 | — | Reverse lamps | p.316 |
| 51 | — | Parking lamp | p.318 |
| 59 | — | Euro trailer | p.317 |
| 60 | — | Air conditioning control | p.317 |
| 63 | — | Upfitter 1 | p.317 |
| 64 | — | Secondary fuel pump | p.318 |
| 67 | — | Trailer battery | p.317 |
| 68 | — | Secondary fuel pump | p.317 |
| 70 | — | VBAT upfitter 3 and 4 | p.317 |
| 72 | — | Upfitter 1 | p.318 |
| 74 | — | Engine control module/Ignition | p.317 |
| 75 | — | Miscellaneous/ Ignition/- | p.317 |
| 76 | — | Transmission/ Ignition | p.317 |
| 77 | — | RC upfitter 1 and 2 | p.317 |
| 78 | — | VBAT upfitter 1 and 2 | p.317 |
| 83 | — | Euro trailer/RC | p.317 |
| 84 | — | Run/Crank | p.318 |
| 88 | — | Injector A - odd | p.317 |
| 89 | — | Injector B - even | p.317 |
| 90 | — | O2 sensor B | p.317 |
| 91 | — | Throttle control | p.317 |
| 92 | — | Engine control module | p.318 |
| 93 | — | Horn | p.317 |
| 94 | — | Fog lamps | p.317 |
| 95 | — | High-beam headlamps | p.317 |
| 100 | — | O2 sensor A | p.317 |
| 101 | — | Engine control module | p.317 |
| 102 | — | Engine control module/ Transmission control module | p.317 |
| 107 | — | Aeroshutter | p.318 |
| 109 | — | Police upfitter | p.318 |
| 112 | — | Starter | p.318 |
| 114 | — | Front windshield washer | p.318 |
| 115 | — | Rear window washer | p.318 |
| 116 | — | Left cooling fan | p.318 |
| 117 | — | Fuel pump prime | p.318 |
| 120 | — | Fuel pump prime | p.318 |
| 121 | — | Right HID headlamp | p.318 |
Instrument Panel Fuse Block (Left)
Where to find it
Instrument Panel Fuse Block (Left) The left instrument panel fuse block access door is on the driver side edge of the instrument panel.
Pull off the cover to access the fuse block.
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 318
What each fuse protects
| Fuse | Amps | Protects | Source |
|---|---|---|---|
| 4 | — | Accessory power outlet 1 | p.319 |
| 5 | — | Retained accessory power | p.319 |
| 6 | — | APO/BATT | p.319 |
| 7 | — | Universal garage door opener/Interior rearview mirror | p.319 |
| 8 | — | SEO/Retained accessory power | p.319 |
| 10 | — | Body control module 3 | p.319 |
| 11 | — | Body control module 5 | p.319 |
| 12 | — | Steering wheel control backlighting | p.319 |
| 17 | — | Video processing module | p.320 |
| 18 | — | Mirror window module | p.320 |
| 19 | — | Body control module 1 | p.320 |
| 20 | — | Front bolster (if equipped) | p.320 |
| 24 | — | HVAC/Ignition | p.320 |
| 25 | — | Instrument cluster/ Ignition sensing diagnostic module/ Ignition | p.320 |
| 26 | — | Tilt column/SEO/Tilt column lock 1/SEO | p.320 |
| 27 | — | Data link connector/ Driver seat module | p.320 |
| 28 | — | Passive entry/Passive start/HVAC battery | p.320 |
| 33 | — | SEO/Automatic level control/Left heated second row seat | p.320 |
| 34 | — | Park enable/Electric adjustable pedal (if equipped) | p.320 |
| 36 | — | Miscellaneous/Run crank | p.320 |
| 37 | — | Heated steering wheel | p.320 |
| 38 | — | Steering column lock 2 (if equipped) | p.320 |
| 39 | — | Instrument cluster battery | p.320 |
| 42 | — | Euro trailer (if equipped) | p.320 |
| 44 | — | Driver power seat | p.320 |
| 46 | — | Right heated, cooled, or ventilated seat (if equipped) | p.320 |
| 47 | — | Left heated, cooled, or ventilated seat (if equipped) | p.320 |
| 50 | — | Accessory power outlet 2 | p.320 |
| 52 | — | Retained accessory power | p.320 |
Instrument Panel Fuse Block (Right)
Where to find it
Instrument Panel Fuse Block (Right) The right instrument panel fuse block access door is on the passenger side edge of the instrument panel.
Pull off the cover to access the fuse block.
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 321
What each fuse protects
| Fuse | Amps | Protects | Source |
|---|---|---|---|
| 4 | — | Accessory power outlet 4 | p.322 |
| 8 | — | Glove box | p.322 |
| 12 | — | Steering wheel controls | p.322 |
| 13 | — | Body control module 8 | p.322 |
| 19 | — | Body control module 4 | p.322 |
| 21 | — | Sunroof | p.322 |
| 26 | — | Infotainment/Airbag | p.322 |
| 27 | — | -/RF window switch/ Rain sensor | p.322 |
| 28 | — | Obstacle detection/USB | p.322 |
| 29 | — | Radio | p.322 |
| 36 | — | Special equipment option B2 | p.322 |
| 38 | — | Body control module 2 | p.322 |
| 39 | — | DC to AC inverter | p.322 |
| 44 | — | Right door window motor | p.322 |
| 45 | — | Front blower | p.322 |
| 46 | — | Body control module 6 | p.322 |
| 47 | — | Body control module 7 | p.322 |
| 48 | — | Amplifier | p.322 |
| 49 | — | Right front seat | p.322 |
| 50 | — | Accessory power outlet 3 | p.322 |
| 52 | — | Retained accessory power | p.323 |
Rear Compartment Fuse Block
Where to find it
Rear Compartment Fuse Block The rear compartment fuse block is behind the access panel on the left side of the compartment.
Pull the panel out by grabbing the finger access slot at the rear edge.
Source: 2018 GMC Yukon/ Yukon XL Denali Owner Manual, page 323
What each fuse protects
| Fuse | Amps | Protects | Source |
|---|---|---|---|
| 1 | — | Rear window defogger | p.324 |
| 3 | — | Right heated second row seat | p.323 |
| 4 | — | Heated mirrors | p.323 |
| 5 | — | Liftgate | p.323 |
| 6 | — | Glass breakage | p.323 |
| 7 | — | Liftglass | p.323 |
| 8 | — | Liftgate module logic | p.323 |
| 9 | — | Rear wiper | p.323 |
| 10 | — | Rear heating, ventilation, and air conditioning blower | p.323 |
| 11 | — | Second row seat | p.323 |
| 12 | — | Liftgate module | p.323 |
| 13 | — | Third row seat | p.323 |
| 14 | — | Rear accessory power outlet | p.323 |
| 15 | — | Rear window defogger | p.323 |
| 16 | — | Liftgate | p.324 |
| 17 | — | Liftglass | p.324 |
| 18 | — | Rear fog lamp | p.324 |
| 20 | — | Heated mirror | p.324 |
More fuse pages in the manual
Diagrams and printed legends we can’t host. Check the box name printed on a diagram before counting positions.