LOW CAB FORWARD AND SILVERADO 4500 HD/5500 HD/6500 HD GROSS COMBINATION WEIGHT RATINGS 44
LOW CAB FORWARD
MODEL ENGINE AXLE RATIO GCWR
1
3500 6.6L V8 4.10 18,000
4500 6.6L V8 4.30 20,500
4500 HD 5.2L Turbo-Diesel 4.56 20,500
4500 XD 5.2L Turbo-Diesel 4.77 22,000
5500 HD 5.2L Turbo-Diesel 5.12 23,950
5500 XD 5.2L Turbo-Diesel 5.57 25,500
6500 XD 5.2L Turbo-Diesel 5.57 30,000
6500 XD 5.2L Turbo-Diesel 6.14 30,000
SILVERADO 4500 HD/5500 HD/6500 HD
MAX GCWR
1
REAR AXLE
RATIO
ALLISON®
TRANSMISSION
MODEL
REAR AXLE
RATING
26,000
2WD 4.10 1700/2700 10,000–15,500
2WD/4x4 4.30 1700/2700 10,000–15,500
2WD 4.56 1700/2700 10,000–15,500
2WD 4.88 1700/2700 10,000–15,500
30,000
2WD 4.10 1750/2750 10,000–15,500
2WD/4x4 4.30 1750/2750 10,000–13,500
2WD 4.56 1750/2750 10,000–13,500
2WD 4.88 1750/2750 10,000–13,500
34,000 2WD/4x4 4.30 1750/2750 15,000/15,500
35,000 2WD 4.56 1750/2750 15,000/15,500
37,000 2WD 4.88 1750/2750 15,000/15,500
Notes on Low Cab Forward and Silverado 4500 HD/5500 HD/6500 HD: Gross
Combination Weight Rating (GCWR) Engineers perform extensive testing of
acceleration, handling, braking, and thermal and structural performance to
determine the GCWR for your vehicle. The GCWR is the total allowable weight
of the completely loaded vehicle and trailer including any passengers, cargo,
equipment and conversions. You should not exceed the GCWR of your vehicle
when you tow a trailer.
1 Gross Combination Weight Rating (GCWR). When properly equipped; includes weight of the vehicle and trailer combination, including the weight of driver, passengers, fuel, optional equipment and cargo in the vehicle and trailer.