2018 GMC Yukon XL Dimensions, Sizes & Specifications
Based on 6 trims — exact values when identical, ranges when trims differ. Generation: Fourth generation (GMTK2UC/G).
- Length224.4 in
- Width80.5 in
- Height74.4 in
- Wheelbase130.0 in
- Ground clearance7.9 in
- Curb weight5,610 lb – 5,965 lb
- Length224.4 in
- Height74.4 in
- Wheelbase130.0 in
- Ground clearance7.9 in
- Curb weight5,610 lb – 5,965 lb
- Width80.5 in
Proportional exterior silhouette from catalog length, width and height. The explorer below is a systems map — different purpose, not a second silhouette.
Explore your 2018 GMC Yukon XL
Interactive systems diagram for this model year — measure, check fitment, and open the matching SpecSizes tools. Schematic only; not photorealistic body styling.
- Dimensions
- Wheels
- Tires
- Battery
- Oil
- Interior
Available for this vehicle
- Dimensions
- Wheels
- Tires
- Battery
- Oil
- Interior
Select a system below or on the diagram. This schematic marks measurement areas — it is not body-accurate styling.
Catalog summaries
Exterior: 224.4 in · 80.5 in · 74.4 in. Full dimensions
Wheels: bolt pattern 6x139.7, bore 78.1 mm. Wheel sizes
Tires: P275/55SR20.0 BSW AS, P265/65SR18.0 BSW AS, 265/65R18, 275/55R20…. Tire sizes
What do you want to check?
- Compare this vehicleSize vs a competitor
- See size by yearModel history & chart
- Will it fit in my garage?Door & bay clearance calculator
- Find cars similar in sizeExterior length, width & height neighbors
- Browse cars by sizeReverse-search by length, width & height
- Check tire sizeOEM tire sizes
- Check battery sizeGroup size
- Check oil capacityCapacity & viscosity
- Check wheel sizeBolt pattern, bore, offset
- Wheel fitment & interchangeCompare donor or custom wheels
Exterior dimensions
| Length | 224.4 in |
|---|---|
| Width | 80.5 in |
| Height | 74.4 in |
| Wheelbase | 130.0 in |
| Ground clearance | 7.9 in |
Interior dimensions
| Front headroom | 43.0 in |
|---|---|
| Rear headroom | 39.0 in |
| Front legroom | 45.3 in |
| Rear legroom | 39.7 in |
| Front shoulder room | 65.0 in |
| Rear shoulder room | 65.0 in |
| Front hip room | 61.0 in |
| Rear hip room | 60.0 in |
Weight & capacities
| Curb weight | 5,610 lb – 5,965 lb |
|---|---|
| GVWR | 7,300 lb – 7,500 lb |
| Fuel tank | 31.0 gal |
| Max towing capacity | 6,000 lb – 8,000 lb |
Engine
- 1880 1914
- 1879 1914
| Torque | 383 – 460 lb-ft |
|---|
Torque shown in lb-ft as stored in the catalog.
Wheels, tires & maintenance sizes
Tire sizes Full tire size page → · Wheel fitment →
- P275/55SR20.0 BSW AS
- P265/65SR18.0 BSW AS
- 265/65R18
- 275/55R20
- 285/45R22
Battery group size Full battery size page →
- 48H6
- 94RH7
- H7-AGM
Oil capacity Full oil capacity page →
- 0W-208 qt
- 0W-208 qt
Trim-by-trim dimensions (6 trims)
| Trim | Length | Width | Height | Wheelbase | Clearance | Curb wt |
|---|---|---|---|---|---|---|
| Denali 4x2 | 224.4 | 80.5 | 74.4 | 130.0 | 7.9 | 5665 |
| Denali 4x4 | 224.4 | 80.5 | 74.4 | 130.0 | 7.9 | 5965 |
| SLE 4x2 | 224.4 | 80.5 | 74.4 | 130.0 | 7.9 | 5610 |
| SLE 4x4 | 224.4 | 80.5 | 74.4 | 130.0 | 7.9 | 5846 |
| SLT 4x2 | 224.4 | 80.5 | 74.4 | 130.0 | 7.9 | 5610 |
| SLT 4x4 | 224.4 | 80.5 | 74.4 | 130.0 | 7.9 | 5846 |
Values in inches / pounds as stored. Ranges above reflect trim variation.
Same generation (Fourth generation (GMTK2UC/G)): years 2016–2020. View model overview