GMC SIERRA CK2 1999 Owner's Manual page 234

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C 2500 (2WD)
Engine (Trans.) Axle Ratio Max. Trailer Wt.
5.7L 3.42
3.73
4.10
6.5L Diesel 3.42
3.73
4.10
7.4L 3.73
4.10
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*Fifth wheel hitch rating; weight
rating is limited to 10,000 lbs. (4 540 kg).
4-52
6,000 lbs. (2 724 kg)
7,000 lbs. (3 178 kg)
8,000 lbs. (3 632 kg)
6,500 lbs. (2 951 kg)
7,500 lbs. (3 405 kg)
8,500 lbs. (3 859 kg)
9,000 lbs. (4 086 kg)
11,000 lbs.* (4 994 kg)
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distributing hitch
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K 2500 (4WD)
Engine (Trans.) Axle Ratio Max. Trailer Wt.
5.7L 3.73
4.10
6.5L Diesel 3.73
4.10
7.4L 3.73
4.10
-
*Fifth wheel hitch rating; weight
rating is limited to 10,000 lbs. (4 540 kg).
yellowblue
6,000 lbs. (2 724 kg)
7,500 lbs. (3 405 kg)
6,500 lbs. (2 951 kg)
8,000 lbs. (3 632 kg)
8,500 lbs. (3 859 kg)
10,500 lbs.* (4 767 kg)
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distributing hitch