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Chevrolet Silverado / GMC Sierra. Manual - part 1484
Drive Side
Centered - Coast
Side Centered
No correction
required.
Drive Pinion Issue - 2 Cut Gearset
Drive Side Low
Heel Contact -
Coast Side High
Heel Contact
1. Inspect the
backlash to
ensure that it is
approximately
0.08-0.13 mm
(0.003-0.005 in)
2. If backlash is
correct, move the
drive pinion
closer to the ring
gear by increasing
the thickness of
the pinion shim
on a one-piece
axle housing or
by decreasing the
thickness of the
pinion shim on
the 10.5 inch
two-piece axle
housing.
1. Inspect the
backlash to
ensure that it is
approximately
0.08-0.13 mm
(0.003-0.005 in)
2. If backlash is
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Drive Side Low
Heel Contact -
Coast Side Low
Toe Contact
correct, move the
drive pinion away
from the ring gear
by decreasing the
thickness of the
pinion shim on a
one-piece axle
housing or by
increasing the
thickness of the
pinion shim on
the 10.5 inch
two-piece axle
housing.
Backlash Issue
Drive Side High
Heel Contact -
Coast Side High
Toe Contact
Backlash incorrect.
The ring gear is too far
away from the drive
pinion. Inspect and
adjust the backlash as
necessary to ensure that
it is approximately
0.08-0.13 mm (0.003-
0.005 in).
Drive Side Low
Toe Contact -
Coast Side Low
Heel Contact
Backlash incorrect.
The ring gear is too
close to the drive
pinion. Inspect and
adjust the backlash as
necessary to ensure that
it is approximately
0.08-0.13 mm (0.003-
0.005 in).
Drive Side
Centered - Coast
Side Centered
No correction
required.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Drive Pinion Issue - 5 Cut Gearset
Drive Side High
and Slightly Heel
Contact - Coast
Side High and
Slightly Toe
Contact
1. Inspect the
backlash to
ensure that it is
approximately
0.08-0.13 mm
(0.003-0.005 in)
2. If backlash is
correct, move the
drive pinion
closer to the ring
gear by increasing
the thickness of
the pinion shim
on a one-piece
axle housing or
by decreasing the
thickness of the
pinion shim on
the 10.5 inch
two-piece axle
housing.
1. Inspect the
backlash to
ensure that it is
approximately
0.08-0.13 mm
(0.003-0.005 in)
2. If backlash is
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Drive Side Low
and Slightly Heel
Contact - Coast
Side High and
Slightly Toe
Contact
correct, move the
drive pinion away
from the ring gear
by decreasing the
thickness of the
pinion shim on a
one-piece axle
housing or by
increasing the
thickness of the
pinion shim on
the 10.5 inch
two-piece axle
housing.
Backlash Issue
Drive Side Heel
Contact - Coast
Side Toe Contact
Backlash incorrect.
The ring gear is too far
away from the drive
pinion. Inspect and
adjust the backlash as
necessary to ensure that
it is approximately
0.08-0.13 mm (0.003-
0.005 in).
Drive Side Toe
Contact - Coast
Side Heel Contact
Backlash incorrect.
The ring gear is too
close to the drive
pinion. Inspect and
adjust the backlash as
necessary to ensure that
it is approximately
0.08-0.13 mm (0.003-
0.005 in).
Drive Side Heel Toe
Pattern
Condition
Coast Side Toe Heel
Pattern
Condition
Corrective
Action
Face Hobbing
Toe Contact
Heel Contact Pinion shim
correct.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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