GMC 2012 Sierra Owner's Manual page 360

9-84 Driving and Operating
Vehicle
1500 Series 4WD Extended Cab Standard Box
4.8L V8 (b)
5.3L V8 (b)
5.3L V8 K5L HD Cooling Pkg (b)
5.3L V8 K5L HD Cooling
Pkg Conventional Trailer
5.3L V8 K5L HD Cooling
Pkg Fifth-Wheel Trailer
6.2L V8 K5L HD Cooling
Pkg Conventional Trailer
6.2L V8 K5L HD Cooling
Pkg Fifth-Wheel Trailer
6.2L V8 NHT Max Trailering
Pkg Conventional Trailer
6.2L V8 NHT Max Trailering
Pkg Fifth-Wheel Trailer
1500 Series 4WD Crew Cab Short Box (b)
4.8L V8
5.3L V8
Axle Ratio Maximum Trailer Weight
3.42 2 495 kg (5,500 lbs)
3.08 2 767 kg (6,100 lbs)
3.08 3 084 kg (6,800 lbs)
3.42 4 354 kg (9,600 lbs)
3.42 4 354 kg (9,600 lbs)
3.42 4 264 kg (9,400 lbs)
3.42 4 128 kg (9,100 lbs)
3.73 4 717 kg (10,400 lbs)
3.73 4 672 kg (10,300 lbs)
3.42 2 495 kg (5,500 lbs)
3.08 2 722 kg (6,000 lbs)
I n f o r ma t i o n P r o v i d e d b y :
GCWR (a)
4 990 kg (11,000 lbs)
5 216 kg (11,500 lbs)
5 534 kg (12,200 lbs)
6 804 kg (15,000 lbs)
6 804 kg (15,000 lbs)
6 804 kg (15,000 lbs)
6 804 kg (15,000 lbs)
7 257 kg (16,000 lbs)
7 257 kg (16,000 lbs)
4 990 kg (11,000 lbs)
5 216 kg (11,500 lbs)