What is max and min thickness (discard) spec on 03 gmc rear rotors & why when replacing pads on rear, is the inboard pad so tight to fit into caliper? my next step is to grind a little off the end of the pad backing ears. 2003 sierra 2500 hd ext cab long bed 6.0 litre
There is many kind of brake system of ur truck here i will send u everything about the brake and i hope its help
Rear Brakes JC3
Rotor Discard Thickness*
18.50 mm/0.728 in
Rotor Minimum Allowable Thickness After Refinish
19.0 mm/0.748 in
Rotor Thickness (new)
20.0 mm/0.787 in
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
Rear Brakes JC4
Rotor Discard Thickness*
28.50 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
0.05 mm/0.002 in
Rotor Maximum Allowable Scoring1
.50 mm/0.059 in
Rotor Maximum Allowable Thickness Variation
0.025 mm/0.001 in
Rear Brakes JH2
Rotor Discard Thickness*
28.50 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
0.05 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
Rear Brakes JH6
Rotor Discard Thickness*
27.50 mm/1.082 in
Rotor Minimum Allowable Thickness After Refinish
28.0 mm/1.102 in
Rotor Thickness (new)
29.0 mm/1.141 in
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
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
0.05 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
* 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 or discard thickness specifications.
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there are 4 different rotors for you truck ? remove the caliper hardware and clean the bracket with a die grinder
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