Model year 2018 · K2XX (2015–2020)

2018 GMC Yukon specs

The 2018 GMC Yukon tows 6,000–8,500 lb, weighs 5,309–5,981 lb at the curb and measures 203.9–224.4 in long, by configuration, per GMC’s own documents.

We hold 8 configurations of the 2018 Yukon, and GMC gives a figure for every one.

Retail configurations: 8
Documents: 5

01 / Configurations

Every 2018 Yukon configuration

8 retail configurations sold in 2018, each with the figures GMC publishes for it. A number a factory package raises shows under the configuration’s own. GMC gives figures for weights, dimensions and towing.

20188 configurations

2018 GMC Yukon K2XX: every configuration with its numbers
Configuration	Max towing	Curb weight	Tires
SLE / SLT Yukon EcoTec3 5.3L V8 2WD	6,500 lb8,500 lb¹	5,309 lb	265/65R18
SLE / SLT Yukon EcoTec3 5.3L V8 4WD	6,300 lb8,200 lb¹	5,545 lb	265/65R18
SLE / SLT Yukon XL EcoTec3 5.3L V8 2WD	6,300 lb8,300 lb¹	5,536 lb	265/65R18
SLE / SLT Yukon XL EcoTec3 5.3L V8 4WD	6,000 lb8,000 lb¹	5,776 lb	265/65R18
Denali Yukon EcoTec3 6.2L V8 2WD	8,400 lb	—	275/55R20
Denali Yukon EcoTec3 6.2L V8 4WD	8,100 lb	5,745 lb	275/55R20
Denali Yukon XL EcoTec3 6.2L V8 2WD	8,100 lb	—	275/55R20
Denali Yukon XL EcoTec3 6.2L V8 4WD	7,900 lb	5,981 lb	275/55R20

MakerSources: 2018 GMC Trailering Guide (Yukon and Yukon XL trailer weight ratings, page 22) · Canadian Vehicle Specifications, GMC Yukon and Yukon XL (NHTSA vPIC GetCanadianVehicleSpecifications, metric; query Year=2015)

Third-partySources: 2018 GMC Yukon Tire Size (sizemytires.com) (SizeMyTires) · 2018 GMC Yukon XL Tire Size (sizemytires.com) (SizeMyTires)

¹ With the Heavy-Duty Trailering Package (NHT): the maker’s figure for the configuration with that factory option.

A dash means the maker’s documents we have don’t give that number for that configuration, and a column with no number for any configuration of the year isn’t shown. “Door label” means the maker prints it only on each vehicle’s certification label, and “not published” that the maker doesn’t print it, or points elsewhere. “Up to” is a ceiling the maker prints over several configurations; a range is the maker’s own, printed across the grades of that configuration.

Third-partyA double underline marks a figure from a magazine test, dealer or spec site, not the maker’s own documents: shown only where the maker publishes nothing, and never used for a headline, comparison or ranking. Its page is listed with the year’s sources.

02 / What changed

New for 2018

The 2018 Yukon against the 2017, the previous model year we hold. Only what GMC’s documents show: nothing here is inferred.

No retail configuration added or dropped: the 8 sold in the 2017 are all here.
Same range as the 2017: curb weight and length.

03 / Sources

The 2018 documents

5 documents behind the 2018 Yukon’s figures. The maker’s own come first; a third-party page fills in only a number the maker doesn’t publish, and wears its own mark.

Documents last checked Oct 12, 2026. How we read them and what the marks mean: how we source the numbers. A figure doesn’t match its document? Report a wrong number.

04 / Keep going

More on the Yukon

Yukon K2XXEvery K2XX configuration, model year by model year, with clearance, angles and weights (2015–2020).Open the K2XX specs 2018 Yukon towingMax towing, GCWR, payload and tongue weight for every rated configuration.See the towing table Yukon specsEvery generation, the spec plate and the rig builder.Open the model page

These are GMC’s published figures for the models it describes, not a weighbridge or a tape measure; your own vehicle’s options change them. Found a figure that doesn’t match the document? Tell us.