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Chevrolet Silverado / GMC Sierra. Manual - part 1503
J 45870
Pinion Bearing Cup Installer
J 45871
Pinion Bearing Remover
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2008 BRAKES
Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
DISC BRAKE COMPONENT SPECIFICATIONS
Application
Specification
Metric
English
Brake Caliper Bleeder Screw
12 N.m
106 lb in
Brake Caliper Bracket Bolt, Front (JD9, JF3, JF7)
175 N.m
129 lb ft
Brake Caliper Bracket Bolt, Front (JH6, JH7)
300 N.m
221 lb ft
Brake Caliper Bracket Bolt, Rear (JD9)
200 N.m
148 lb ft
Brake Caliper Bracket Bolt, Rear (JH6)
200 N.m
148 lb ft
Brake Caliper Bracket Bolt, Rear (JH7)
300 N.m
221 lb ft
Brake Caliper Guide Pin Bolt, Front (JD9, JF3,
JF7)
100 N.m
74 lb ft
Brake Caliper Guide Pin Bolt, Front (JH6, JH7)
108 N.m
80 lb ft
Brake Caliper Guide Pin Bolt, Rear (JD9)
38 N.m
28 lb ft
Brake Caliper Guide Pin Bolt, Rear (JH6, JH7)
108 N.m
80 lb ft
Brake Rotor Screw (JD9, JF3, JF7)
12 N.m
106 lb in
Brake Hose Fitting Bolt, Front (JD9, JF3, JF7)
40 N.m
30 lb ft
Brake Hose Fitting Bolt, Rear (JD9)
40 N.m
30 lb ft
Brake Hose Fitting Bolt, Front and Rear (JH6, JH7)
40 N.m
30 lb ft
Disc Brake Backing Plate Nut (JH6, JH7)
225 N.m
166 lb ft
Wheel Hub Extension Nut (JH7)
130 N.m
96 lb ft
Application
Specification
Metric
English
Front Brakes JF3, JF7
Rotor Discard Thickness*
28.0 mm
1.10 in
Rotor Minimum Allowable Thickness After
Refinish
28.0 mm
1.10 in
Rotor Thickness (new)
30.0 mm
1.181 in
2008 Chevrolet Silverado 1500
2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2008 Chevrolet Silverado 1500
2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Rotor Maximum Allowable Lateral Runout
0.05 mm
0.002 in
Rotor Maximum Allowable Scoring
1.50 mm
0.059 in
Rotor Maximum Allowable Thickness
Variation
0.025 mm
0.001 in
Front Brakes JD9, JH6, JH7
Rotor Discard Thickness*
36.50 mm
1.437 in
Rotor Minimum Allowable Thickness After
Refinish
37.0 mm
1.457 in
Rotor Thickness (new)
38.0 mm
1.496 in
Rotor Maximum Allowable Lateral Runout
0.13 mm
0.005 in
Rotor Maximum Allowable Scoring
1.50 mm
0.059 in
Rotor Maximum Allowable Thickness
Variation
0.025 mm
0.001 in
Rear Brakes JD9
Rotor Discard Thickness*
18.0 mm
0.709 in
Rotor Minimum Allowable Thickness After
Refinish
18.5 mm
0.7282 in
Rotor Thickness (new)
20.0 mm
0.787 in
Rotor Maximum Allowable Lateral Runout
0.25 mm
0.010 in
Rotor Maximum Allowable Scoring
1.50 mm
0.059 in
Rotor Maximum Allowable Thickness
Variation
0.009 mm
0.0004 in
Rear Brakes JH6
Rotor Discard Thickness*
27.5 mm
1.083 in
Rotor Minimum Allowable Thickness After
Refinish
28.0 mm
1.102 in
Rotor Thickness (new)
30.0 mm
1.181 in
Rotor Maximum Allowable Lateral Runout
0.13 mm
0.005 in
Rotor Maximum Allowable Scoring
1.50 mm
0.059 in
Rotor Maximum Allowable Thickness
Variation
0.025 mm
0.001 in
2008 Chevrolet Silverado 1500
2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSTIC STARTING POINT - DISC BRAKES
Begin the disc brake system diagnosis with Diagnostic Starting Point - Hydraulic Brakes .
The use of the Diagnostic Starting Point will lead to the identification of the correct procedure
for diagnosing the system and where the procedure is located.
BRAKE ROTOR THICKNESS MEASUREMENT
1. If the inboard friction surface of the brake rotor is not accessible, reposition and support the
caliper with the brake pads. Refer to Front Disc Brake Pads Replacement (JH6, JH7) or
Front Disc Brake Pads Replacement (JD9, JF3, JF7) and/or Rear Disc Brake Pads
Replacement (JH6, JH7) or Rear Disc Brake Pads Replacement (JD9).
2. Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent
approved brake cleaner.
Rear Brakes JH7
Rotor Discard Thickness*
28.5 mm
1.122 in
Rotor Minimum Allowable Thickness After
Refinish
29.0 mm
1.142 in
Rotor Thickness (new)
30.0 mm
1.181 in
Rotor Maximum Allowable Lateral Runout
0.13 mm
0.005 in
Rotor Maximum Allowable Scoring
1.50 mm
0.059 in
Rotor Maximum Allowable Thickness
Variation
0.025 mm
0.001 in
* All brake rotors have a discard dimension cast into them. Replace any rotor that does not
meet this specification. After refinishing the rotor, replace any rotor that does not meet the
minimum thickness specifications.
CAUTION: Refer to Brake Dust Caution .
2008 Chevrolet Silverado 1500
2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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