GMC Sierra 2018 Owner's Manual page 303

302 Driving and Operating
1500/2500/3500 Series Pickups
Vehicle
1500 Series 2WD Regular Cab Long Box
4.3L V6
5.3L V8 Conventional Trailer
5.3L V8 Gooseneck/Fifth-Wheel
Trailer
5.3L V8 Conventional Trailer
5.3L V8 Gooseneck/Fifth-Wheel
Trailer
1500 Series 4WD Regular Cab Standard Box
4.3L V6 Conventional Trailer
4.3L V6 Gooseneck/Fifth-Wheel
Trailer
5.3L V8
5.3L V8
1500 Series 4WD Double Cab Standard Box
4.3L V6 Conventional Trailer
4.3L V6 Gooseneck/Fifth Wheel
5.3L V8 Conventional Trailer
SAE J2807 Compliant
Axle Ratio
3.23
3.08
3.08
3.42
3.42
3.42
3.42
3.08
3.42
3.42
3.42
3.08
Maximum Trailer
Weight (c)
2 676 kg (5,900 lb)
3 084 kg (6,800 lb)
3 039 kg (6,700 lb)
4 445 kg (9,800 lb)
4 400 kg (9,700 lb)
3 447 kg (7,600 lb)
3 402 kg (7,500 lb)
2 994 kg (6,600 lb)
3 901 kg (8,600 lb)
3 221 kg (7,100 lb)
3 175 kg (7,000 lb)
2 812 kg (6,200 lb)
GCWR (a)
4 990 kg (11,000 lb)
5 443 kg (12,000 lb)
5 443 kg (12,000 lb)
6 804 kg (15,000 lb)
6 804 kg (15,000 lb)
5 806 kg (12,800 lb)
5 806 kg (12,800 lb)
5 443 kg (12,000 lb)
6 350 kg (14,000 lb)
5 806 kg (12,800 lb)
5 806 kg (12,800 lb)
5 443 kg (12,000 lb)