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Why would my brake continue to stick if I changed the calipers already. I put to new calipers on the truck. what is the problem
The master cylinder is what applies the pressure to the calipers, so you should check there.
Common Problems > GMC Envoy
Q&A > GMC > 2002 GMC Envoy
Q&A > GMC > 2004 GMC Envoy
Q&A > GMC > 2003 GMC Envoy