GROSS COMBINATION WEIGHT RATINGS (GCWR)
You may prefer to use Gross Combination Weight Ratings (GCWR) to determine the
engine and rear axle ratios you will require to tow a specific trailer. This chart
shows you the maximum allowable GCWR based on all the available engines and
BALL HITCH TRAILERING WITH TAHOE, SUBURBAN AND AVALANCHE
NOTES:
• Weight-Carrying Hitch Limit: 2268 kg (5000 lb.) trailer with 272 kg (600 lb.)
Tongue Weight.
• A Weight-Distributing Hitch and Sway Control is required over 2268 kg
(5000 lb.) Trailer Weight.
• Trailer tongue weight should be 10-15% of the total loaded trailer weight up
to 454 kg (1000 lb.) on the 1500 models and up to 680 kg (1500 lb.) on
2500 models).
• The addition of trailer tongue weight must not cause vehicle weight to
exceed the Rear Gross Axle Weight Rating (RGAWR) or Gross Vehicle Weight
Rating (GVWR). Trailering capacity may be limited by the tow vehicle’s ability
to carry the trailer tongue weight.
• Avalanche models are not intended to tow 5th wheel or gooseneck trailers.
• Heavy-duty trailering equipment is standard on Tahoe, Suburban and
Avalanche. It includes a weight-distributing hitch platform with a 51 mm
(2 in.) receiver, an independently fused trailering circuit mated to a
7-way sealed connector and electric brake controller provision with 4 blunt
cut wires under the instrument panel. A high capacity engine air cleaner and
heavy-duty auxiliary transmission oil cooler are also standard. An external
engine oil cooler is standard on 2500 Series Suburbans and Avalanche and
1500 series Suburbans when equipped with the 6.0L V8 (L76).
Ever since Chevrolet introduced the Suburban 69 years ago, it has earned a reputation for outstanding trailering
capabilities. The latest generations of Tahoe, Suburban and Avalanche have taken trailering capacities and functionality
to an even higher level. Among the improvements are more powerful Vortec engines, and stronger frames, as well as
changes to the braking, steering, handling, suspensions and standard StabiliTrak vehicle stability enchancement
system (except Suburban 2500). The result is not just a better full-size SUV, but an even better tow vehicle.
rear axle ratios with an automatic transmission. The GCWR includes the total
loaded weight of both the truck and the trailer. Any available powertrain may
be used for trailering if the GCWR shown is not exceeded.
ENGINE Vortec 4.8L V8 (LYZ)* Vortec 5.3L V8 (LY5/LMG)** Vortec 5.3L V8 (LC9)** Vortec 6.0L V8 (L76/LY6)**
Horsepower 295 @ 5600 320 @ 5200 310 @ 5200 LY6 - 352 @ 5400
Torque (lb.-ft.) 305 @ 4800 340 @ 4200 335 @ 4400 383 @ 4300
L76 - 366 @ 5500
380 @ 4300
MODEL Max. Trailer Axle Ratio Max. Trailer Axle Ratio Max. Trailer Axle Ratio Max. Trailer Axle Ratio
Weight kg (lb.) Required Weight kg (lb.) Required Weight kg (lb.) Required Weight kg (lb.) Required
C10706
2041 (4500) 3.23 2948 (6500) 3.42
Tahoe 2WD
2948 (6500) 3.73 3402 (7500) 3.73
K10706
3266 (7200) 3.73
Tahoe 4x4
3720 (8200) 4.10
C10906
3221 (7100) 3.73
Suburban 1500 2WD
3674 (8100) 4.10 3720 (8200) 4.10
K10906
3175 (7000) 3.73
Suburban 1500 4x4
3629 (8000) 4.10 3629 (8000) 4.10
C20906
3493 (7700) 3.73
Suburban 2500 2WD
4400 (9700) 4.10
K20906
3357 (7400) 3.73
Suburban 2500 4x4
4264 (9400) 4.10
C10936
3266 (7200) 3.73
Avalanche 1500 2WD
3629 (8000) 4.10 3720 (8200) 4.10
K10936
3175 (7000) 3.73
Avalanche 1500 4x4
3629 (8000) 4.10 3538 (7800) 4.10
TAHOE, SUBURBAN & AVALANCHE
*Available in Tahoe LS1 2WD model only.
**LY5 is only in 2WD Tahoe and Suburban 1500. LMG is a Bi-fuel engine and is optional in 2WD models, standard in Tahoe 4x4. LC9 is a Bi-fuel engine and is standard in Suburban and Avalanche 1500 4x4 models.
L76 is optional in Suburban 1500. LY6 is standard in Suburban 2500 models.
GCWR kg (lb.) 4536 (10,000) 5443 (12,000) 5897 (13,000) 6350 (14,000) 7258 (16,000)
ENGINES/AXLE RATIOS
Vortec 4.8L V8 (LY2) 3.23 3.73
Vortec 5.3L V8 (LY5/LMG) 3.42 3.73 4.10
Vortec 5.3L V8 (LC9, Bi-fuel) 3.73 4.10
Vortec 6.0L V8 (LY6) 4.10
Vortec 6.0L V8 (LY6, Variable Valve Timing) 3.73 4.10
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