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Chevrolet Silverado / GMC Sierra. Manual - part 1485
Increase
backlash.
Desirable
Pattern -
Drive pattern
should be
centered on
tooth
Desirable
Pattern -
Coast pattern
should be
center to
slightly toe on
tooth
No correction
required.
Top Toe
Contact
Top Heel
Contact
Backlash
correct.
Increase in
pinion shim.
Root Heel
Contact
Root Toe
Contact
Backlash
correct.
Decrease in
pinion shim.
Top Heel
Contact
Top Toe
Contact
Pinion shim
correct.
Decrease
backlash.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Root Toe
Contact
Root Heel
Contact
Pinion shim
correct.
Increase
backlash.
Face Milling
Desirable
Pattern -
Drive pattern
should be
centered on
tooth
Desirable
Pattern -
Coast pattern
should be
center to
slightly toe on
tooth
No correction
required.
Top and
Slightly Heel
Contact
Top and
Slightly Toe
Contact
Backlash
correct.
Increase in
pinion shim.
Root and
Slightly Toe
Contact
Root and
Slightly Heel
Contact
Backlash
correct.
Decrease in
pinion shim.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
LOCKING DIFFERENTIAL DISASSEMBLE (8.6, 9.5LD AXLES)
Tools Required
J 26252 Locking Differential Governor Remover. See Special Tools.
Disassemble
1. Remove the ring gear, if necessary. Refer to Drive Pinion and Ring Gear Replacement
(8.6, 9.5/9.5LD, and 11.5 Inch Axles) or Drive Pinion and Ring Gear Replacement
(10.5 Inch Axle).
Heel Contact
Toe Contact Pinion shim
correct.
Decrease
backlash.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 270: Removing Governor Bushing
Courtesy of GENERAL MOTORS CORP.
2. Remove the governor bushing using the J 26252 . See Special Tools.
3. Remove the governor assembly.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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