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Disc Brake System: Specifications GMC Envoy II

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Front Brake Bleed Valve12 N.m110 lb in
Front Brake Caliper Bracket Mounting Bolt160 N.m118 lb ft
Front Brake Caliper Guide Pin42 N.m31 lb ft
Front Brake Hose Bolt40 N.m30 lb ft
Rear Brake Bleed Valve12 N.m110 lb in
Rear Brake Caliper Bracket Mounting Bolt200 N.m148 lb ft
Rear Brake Caliper Guide Pin31 N.m23 lb ft
Rear Brake Hose Bolt54 N.m40 lb ft
Rear Disc Brake Backing Plate Nuts135 N.m100 lb ft

Fastener Tightening Specifications

Disc Brake Component Specifications

ApplicationSpecification
MetricEnglish
Front Brakes
Rotor Discard Thickness *27.5 mm1.08 in
Rotor Thickness (new)29.0 mm1.14 in
Rotor Maximum Allowable Lateral Runout0.051 mm0.002 in
Rotor Maximum Allowable Scoring1.50 mm0.059 in
Rotor Maximum Allowable Thickness Variation0.025 mm0.001 in
Rear Brakes
Rotor Discard Thickness *18.50 mm0.728 in
Rotor Thickness (new)20.0 mm0.787 in
Rotor Maximum Allowable Lateral Runout0.051 mm0.002 in
Rotor Maximum Allowable Scoring1.50 mm0.059 in
Rotor Maximum Allowable Thickness Variation0.025 mm0.001 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.

General Specifications