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Chevrolet Silverado 4500HD/5500HD/6500HD Owner Manual (GMNA-
Localizing-U.S.-12102101) - 2019 - crc - 10/2/18
410
Technical Data
Torque Specifications
U-Bolt Nut Torque Charts
RPO Code
Rear Suspension Type
Torque
Y
lb-ft
GR4
6 100 kg (13,500 lb) Capacity, RR, Springs, Vari-Rate
353
–
407
260
–
300
FU7
7 000 kg (15,500 lb) Capacity, RR, Springs, Vari-Rate
353
–
407
260
–
300
GR3
4 900 kg (11,000 lb) Capacity, Variable Rate Spring
Suspension
353
–
407
260-300
G40
5 400 kg (12,000 lb) Capacity, International Ride
Optimized Suspension (IROS)
353
–
407
260
–
300
GP1
6 100 kg (13,500 lb) Capacity, International Ride
Optimized Suspension (IROS)
353
–
407
260
–
300
GP8
7 000 kg (15,500 lb) Capacity, International Ride
Optimized Suspension (IROS)
353
–
407
260
–
300
For all other vendor supplied suspensions, refer to the vendor's website for proper torque specifications.
RPO Code
Front Suspension Type
Torque
Y
lb-ft
FSN
3 600 kg (8,000 lb) Capacity, Spring Parabolic, Taper
Leaf; with Shock Absorbers
235
–
265
173
–
195