GMC 2010 Sierra Owner's Manual page 436

Vehicle
1500 Series 4WD Extended Cab Standard Box (b)
4.8L V8 (c)
5.3L V8 Fifth-Wheel Trailer
5.3L V8 Conventional Trailer
5.3L V8 K5L HD Cooling Pkg
5.3L V8 K5L HD Cooling Pkg
6.2L V8 (c)
6.2L V8 K5L HD Cooling
Pkg Fifth-Wheel Trailer
6.2L V8 K5L HD Cooling
Pkg Conventional Trailer
6.2L V8 NHT Max Trailering
Pkg Fifth-Wheel Trailer
6.2L V8 NHT Max Trailering
Pkg Conventional Trailer
1500 Series 4WD Crew Cab Short Box (c)
4.8L V8
5.3L V8
5.3L V8 K5L HD Cooling Pkg
5.3L V8 K5L HD Cooling Pkg
6.2L V8
5-60
Axle Ratio Maximum Trailer Weight
3.42 5,500 lbs (2 495 kg)
3.08 6,100 lbs (2 767 kg)
3.08 6,100 lbs (2 767 kg)
3.08 6,800 lbs (3 084 kg)
3.42 9,600 lbs (4 354 kg)
3.42 6,400 lbs (2 903 kg)
3.42 8,900 lbs (4 037 kg)
3.42 9,400 lbs (4 264 kg)
3.73 9,900 lbs (4 491 kg)
3.73 10,400 lbs (4 717 kg)
3.42 5,500 lbs (2 495 kg)
3.08 6,000 lbs (2 722 kg)
3.08 6,700 lbs (3 039 kg)
3.42 9,500 lbs (4 309 kg)
3.42 6,400 lbs (2 903 kg)
GCWR (a)
11,000 lbs (4 990 kg)
11,500 lbs (5 216 kg)
11,500 lbs (5 216 kg)
12,200 lbs (5 534 kg)
15,000 lbs (6 804 kg)
12,000 lbs (5 443 kg)
15,000 lbs (6 804 kg)
15,000 lbs (6 804 kg)
16,000 lbs (7 257 kg)
16,000 lbs (7 257 kg)
11,000 lbs (4 990 kg)
11,500 lbs (5 216 kg)
12,200 lbs (5 534 kg)
15,000 lbs (6 804 kg)
12,000 lbs (5 443 kg)