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GROSS COMBINATION WEIGHT RATINGS (GCWR)
You may prefer to use Gross Combination Weight Ratings (GCWR) to determine the
engine and rear axle ratio you will require to tow a specific trailer with your GMC
Savana. The chart below shows you the maximum allowable GCWR based on all the
RWB – Regular wheelbase. LWB – Long wheelbase. RWD – Rear-wheel Drive. AWD – All-wheel Drive.
NOTES:
• Savana vans are not equipped or recommended for trailering with a bumper-
mounted ball hitch. If you’ll be towing a trailer, be sure to use a frame-
mounted hitch of the proper size.
• Any GMC Savana can tow a 907 kg (2000 lb.) trailer without special equipment,
except for the appropriate hitch and wiring.
• The weight-carrying hitch limit is a 1814 kg (4000 lb.) trailer with a 181 kg
(400 lb.) tongue weight.
• Savana vans towing trailers weighing over 1814 kg (4000 lb.) require a
weight-distributing hitch platform, which is included with optional Z82
Trailering Special Equipment Package.
NOTE: Model availability of the above driveline combinations must be verified
by your GMC dealer. Savana Special cutaway models are incomplete vehicles
and trailer ratings are not assigned; use this GCWR chart to determine
powertrain requirements and combination weight limit.
BALL HITCH TRAILERING WITH SAVANA CARGO MODELS
ENGINE VORTEC 4.3L V6 (LU3) VORTEC 4.8L V8 (LR4) VORTEC 5.3L V8 (LM7/L59) VORTEC 6.0L V8 (LQ4) DURAMAX 6.6L DIESEL V8 (LLY)
Horsepower
195 @ 4600 285 @ 5200 295 @ 5200 300 @ 4400 250 @ 3000
Torque (lb.-ft.)
260 @ 2800 295 @ 4000 335 @ 4000 360 @ 4000 460 @ 1600
SERIES/MODEL Max. Trailer Axle Ratio Max. Trailer Axle Ratio Max. Trailer Axle Ratio Max. Trailer Axle Ratio Max. Trailer Axle Ratio
Weight Required Weight Required Weight Required Weight Required Weight Required
kg (lb.) kg (lb.) kg (lb.) kg (lb.) kg (lb.)
G13405
1950 (4300) 3.42 2676 (5900) 3.42
1500 – RWB – RWD
2676 (5900) 3.73
H13405
2948 (6500) 3.42
1500 – RWB – AWD
2948 (6500) 3.73
G23405
2858 (6300) 3.73 3765 (8300) 3.73 4536 (10,000) 3.73
2500 – RWB – RWD
3311 (7300) 4.10 4536 (10,000) 4.10
G23705
2767 (6100) 3.73 3674 (8100) 3.73 4536 (10,000) 3.73
2500 – LWB – RWD
3221 (7100) 4.10 4536 (10,000) 4.10
G33405
2812 (6200) 3.73 3720 (8200) 3.73 4536 (10,000) 3.73
3500 – RWB – RWD
3266 (7200) 4.10 4536 (10,000) 4.10
G33705
2721 (6000) 3.73 3629 (8000) 3.73 4536 (10,000) 3.73
3500 – LWB – RWD
3175 (7000) 4.10 4536 (10,000) 4.10
BALL HITCH TRAILERING WITH SAVANA PASSENGER MODELS
As the largest and most capable vans in GMC’s long and illustrious history, the full-size Savanas are ideal tow
vehicles. Along with massive capacity and rock-solid strength, Savanas have all the power you need for accelerating
and merging with a trailer in tow. With the 300 horsepower Vortec 6.0L V8, Savana can tow up to 4536 kg (10,000 lb.)
when properly equipped. And now the efficiency of diesel power is available in 2500/3500 Cargo models – the
Duramax 6.6L V8 produces 460 lb.-ft. of torque.
• The trailering tongue weight should be 10-15% of total loaded trailer weight,
up to 454 kg (1000 lb.).
• The Z82 Trailering Special Equipment Package includes a weight-distributing
hitch platform and a 7-wire trailer wiring harness.
• The base cooling system for vans with a GVWR under 3900 kg (8600 lb.)
includes all that is required to attain the maximum trailer rating. An auxiliary
transmission oil cooler is required on vans with a GVWR of 3900 kg (8600 lb.),
or higher, equipped with a Vortec gasoline engine when the trailer weight exceeds
1814 kg (4000 lb.).
• The standard electrical system was designed to handle one additional
stop/turn light bulb per tail light circuit. The addition of more than one
bulb per circuit may result in damage to the electrical system unless
equipped with the optional 7-wire trailer wiring harness.
available engines and rear axle ratios. The GCWR includes the total loaded weight
of both the truck and the trailer. Any available engine may be used for trailering if
the GCWR shown is not exceeded.
GCWR kg (lb.)
4309 (9500) 4536 (10,000) 5443 (12,000) 5897 (13,000) 6350 (14,000) 7258 (16,000) 7711 (17,000) 8392 (18,500)
ENGINE AXLE RATIO WITH AUTOMATIC TRANSMISSION
Vortec 4.3L V6
3.42 3.73
Vortec 4.8L V8
3.73 4.10
Vortec 5.3L V8
3.42/3.73
Vortec 6.0L V8
3.73 4.10
Duramax 6.6L V8 Diesel
3.73 3.73*
*G33803/G33903 Special cutaway models with dual rear wheels.
SAVANA CARGO & PASSENGER VANS
ENGINE Vortec 4.8L V8 (LR4) Vortec 5.3L V8 (LM7/L59) Vortec 6.0L V8 (LQ4)
SERIES/MODEL Max. Trailer Axle Max. Trailer Axle Max. Trailer Axle
Weight, kg (lb.) Required Weight, kg (lb.) Required Weight, kg (lb.) Required
G13406
2858 (6300) 3.42
1500 – RWB – RWD
2858 (6300) 3.73
H13406
2767 (6100) 3.42
1500 – RWB – AWD
2767 (6100) 3.73
G23406
2858 (5800) 3.73 3538 (7800) 3.73
2500 – RWB – RWD
3084 (6800) 4.10 4445 (9800) 4.10
G33406
3493 (7700) 3.73
3500 – RWB – RWD
G33706
3357 (7400) 3.73
3500 – LWB – RWD
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