Envoy 4WD V8-5.3L VIN P (2004)
4. Remove the boot from the caliper bore. Do not scratch the housing bore.
5. Remove the piston seal from the caliper bore. Do not use a metal tool.
6. Remove the bleeder valve and bleeder valve cap from the caliper body.
7. Remove the guide pins and guide pin sleeves from the anchor bracket.
8. Clean the following components with denatured alcohol.
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The bleeder valve
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The caliper bore
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The caliper passages
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The piston
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The lining contact area on the anchor bracket.
9. Dry the parts and blow out the brake fluid passages. Use dry and filtered compressed air.
10. Replace the piston or the caliper if any of the following conditions exist:
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Scoring on the piston surface or in the caliper bore
