GMC 2003 Sierra 1500 Pickup Owner's Manual page 358

Vehicle*
I
Axle Ratio
I
Maximum Trailer Weight
I
GCWR
C-2500 Extended Cab Lon Box HD 2WD
*
*
Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 Ibs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 Ibs. (1 360 kg)
maximum.
** Limited to 12,000 Ibs. (5 443
kg)
with weiqht distributing hitch.
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