GMC Sierra 2018 Owner's Manual page 304

1500/2500/3500 Series Pickups
Vehicle
5.3L V8 Gooseneck/Fifth Wheel
5.3L V8 Conventional Trailer
5.3L V8 Gooseneck/Fifth-Wheel
5.3L V8, 8-speed automatic
transmission with Enhanced
Towing Package
5.3L V8
6.2L V8 Conventional Trailer
6.2L V8 Gooseneck/Fifth-Wheel
Trailer
6.2L V8 Conventional Trailer
6.2L V8 Gooseneck/Fifth-Wheel
Trailer
1500 Series 4WD Crew Cab Standard Box
5.3L V8 Conventional Trailer
5.3L V8 Gooseneck/Fifth-Wheel
Trailer
5.3L V8 Conventional Trailer
SAE J2807 Compliant
Axle Ratio
3.08
3.42
3.42
3.42
3.73
3.23
3.23
3.42
3.42
3.08
3.08
3.42
Driving and Operating
Maximum Trailer
Weight (c)
2 767 kg (6,100 lb)
4 173 kg (9,200 lb)
4 082 kg (9,000 lb)
4 899 kg (10,800 lb)
4 899 kg (10,800 lb)
4 128 kg (9,100 lb)
3 901 kg (8,600 lb)
5 352 kg (11,800 lb)
4 990 kg (11,000 lb)
2 767 kg (6,100 lb)
2 722 kg (6,000 lb)
4 128 kg (9,100 lb)
303
GCWR (a)
5 443 kg (12,000 lb)
6 804 kg (15,000 lb)
6 804 kg (15,000 lb)
7 575 kg (16,700 lb)
7 575 kg (16,700 lb)
6 804 kg (15,000 lb)
6 804 kg (15,000 lb)
8 029 kg (17,700 lb)
8 029 kg (17,700 lb)
5 443 kg (12,000 lb)
5 443 kg (12,000 lb)
6 804 kg (15,000 lb)