2006 GMC Sierra 1500 Pickup Owner's Manual - Page 385

Vehicle* Axle Ratio Maximum Trailer Weight K-1500 Extended Cab Short Box (4WD)* 3.42 6,700 lbs (3 039 kg) 4800 V8 (Auto) 3.73 6,700 lbs (3 039 kg) 4.10 7,700 lbs (3 493 kg)** 3.42 4,700 lbs (2 132 kg) 4800 V8 (Manual) 3.73 4,700 lbs (2 132 kg) 4.10 5,700 lbs (2 585 kg) 3.42 7,700 lbs (3 493 kg)** 5300 V8 3.73 7,700 lbs (3 493 kg)** 4.10 8,700 lbs (3 946 kg)** ** Maximum weight 7,700 lbs. (3 492 kg) for fifth-wheel or gooseneck. K-1500 HD (4WD)* 3.73 7,900 lbs (3 583 kg) 6000 V8 4.10 9,900 lbs (4 491 kg) GCWR 12,000 lbs 12,000 lbs 13,000 lbs 10,000 lbs 10,000 lbs 11,000 lbs 13,000 lbs 13,000 lbs 14,000 lbs (5 443 kg) (5 443 kg) (5 897 kg) (4 535 kg) (4 535 kg) (4 990 kg) (5 897 kg) (5 897 kg) (6 350 kg) 14,000 lbs (6 350 kg) 16,000 lbs (7 257 kg) Vehicle* Axle Ratio Maximum Trailer Weight GCWR K-1500 Crew Cab (4WD)* 3.42 7,400 lbs (3 357 kg) 13,000 lbs (5 897 kg) 5300 V8 3.73 7,400 lbs (3 357 kg) 13,000 lbs (5 897 kg) 4.10 8,400 lbs (3 810 kg) 14,000 lbs (6 350 kg) 6000 V8** 4.10 9,800 lbs (4 445 kg) 15,500 lbs (7 031 kg) *Fifth-wheel or gooseneck trailering is neither designed nor intended for this vehicle. **Trailer tongue weight should be 10 to 15 percent of total loaded trailer weight up to 1,200 lbs (544 kg) on models with NHT Enhanced Trailering Performance. 4-73