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Driving and Operating 35
Colorado/Canyon Pickup Models–SAE J2807 Compliant
Vehicle Axle Ratio Max. Trailer Wt. GCWR *
Colorado/Canyon Pickup Models –2WD
All 3.42
3 492 kg (7,700 lb) 5 761 kg (12,700 lb)
Colorado/Canyon Pickup Models –4WD
Short Wheelbase Ext. Cab 3.42
3 492 kg (7,700 lb) 5 761 kg (12,700 lb)
Short Wheelbase Crew Cab 3.42
3 447 kg (7,600 lb) 5 761 kg (12,700 lb)
Colorado Pickup –Long Wheelbase
Crew Cab 3.42
3 447 kg (7,600 lb) 5 761 kg (12,700 lb)
Canyon Pickup –Long Wheelbase
Crew Cab 3.42
3 425 kg (7,550 lb) 5 761 kg (12,700 lb)
Colorado ZR2 Models –4WD
All 3.42
2 268 kg (5,000 lb) 4 853 kg (10,700 lb)
*The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any
passengers, cargo, equipment, and conversions. The GCWR for the vehicle should not be exceeded.
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Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
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36 Driving and Operating
2500/3500 Series Van ModelsVehicle Axle Ratio Max. Trailer Wt.
1GCWR *
G2500 Cargo Van Short Wheelbase 3.42
3 175 kg (7,000 lb) 5 897 kg (13,000 lb)
G2500 Cargo Van Long Wheelbase 3.42
2 767 kg (6,100 lb) 5 897 kg (13,000 lb)
G3500 Cargo Van Short Wheelbase 3.42
2 812 kg (6,200 lb) 5 897 kg (13,000 lb)
G3500 Cargo Van Long Wheelbase 3.42
2 722 kg (6,000 lb) 5 897 kg (13,000 lb)
G2500 Passenger Van Short Wheelbase 3.42
2 858 kg (6,300 lb) 5 897 kg (13,000 lb)
G3500 Passenger Van Short Wheelbase 3.42
2 586 kg (5,700 lb) 5 897 kg (13,000 lb)
G3500 Passenger Van Long Wheelbase 3.42
2 404 kg (5,300 lb) 5 897 kg (13,000 lb)
*The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any
passengers, cargo, equipment, and conversions. The GCWR for the vehicle should not be exceeded.
1For Full Box Vans, choose an appropriate hitch and load the truck and trailer within the limits of GCWR, GVWR, and RGAWR.
Van hitch requirements: Trailer tongue weight (10-15% of trailer weight) if under 181 kg (400 lb) use weight carrying hitch. Greater than
181 kg (400 lb) requires weight distribution hitch. Do not exceed 454 kg (1,000 lb).
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Driving and Operating 37
See“Trailer Towing” in the owner’s manual
for kingpin weight and trailer tongue weight
information.
Weight of the Trailer Tongue
The tongue weight load (1) of any trailer is
very important because it is also part of the
vehicle weight. The Gross Vehicle
Weight (GVW) includes the curb weight of
the vehicle, any cargo carried in it, and the
people who will be riding in the vehicle as
well as trailer tongue weight. Vehicle
options, equipment, passengers, and cargo
in the vehicle reduce the amount of tongue
weight the vehicle can carry, which will also
reduce the trailer weight the vehicle
can tow.
The trailer tongue weight (1) should be
10-15% of the total loaded trailer (2). For
Vans: The trailer tongue weight (1) can use a
weight carrying hitch for up to 181 kg
(400 lb). Greater than 181 kg (400 lb), a
weight distribution hitch is required with a
maximum of 454 kg (1,000 lb)
Do not exceed the maximum allowable
tongue weight for the vehicle. Choose the
shortest hitch extension that will position
the hitch ball closest to the vehicle. This will
help reduce the effect of trailer tongue
weight on the rear axle.
Trailer rating may be limited by the vehicle's
ability to carry tongue weight. Tongue or
kingpin weight cannot cause the vehicle to
exceed the GVWR (Gross Vehicle Weight
Rating) or the RGAWR (Rear Gross Axle
Weight Rating). See “Total Weight on the
Vehicle's Tires” in the owner’s manual.
After loading the trailer, weigh the trailer
and then the tongue, separately, to see if
the weights are proper. If they are not,
adjustments might be made by moving
some items around in the trailer.
If a cargo carrier is used in the trailer hitch
receiver, choose a carrier that positions the
load as close to the vehicle as possible.
Make sure the total weight, including the carrier, is no more than half of the
maximum allowable tongue weight for the
vehicle or 227 kg (500 lb), whichever is less.
Conversions and Add-Ons
Power Take-Off (PTO)
If equipped, the Power Take-Off (PTO) is a
GM Upfitter integrated system that is used
to create an auxiliary power source for
running add-on equipment, such as salt
spreaders, snow plows, winches, and lift
buckets. The PTO system controls engine
speed to values higher than normal base
idle, PTO load relay engagement, and
remote starting and shutdown of the
engine.
When installing PTO aftermarket equipment,
the PTO wiring and operation
recommendations provided by the service
manual and GM Upfitter documentation
must be strictly followed.
Refer to the bulletins in the GM Upfitter
Integration website www.gmupfitter.com for
the Power Take-Off (PTO) operating
description and application guide.