how would i know the labor hours needed to do this repair? 2002 trailblazer on 2002 Chevrolet Trailblazer

2002 trailblazer water pump, besides the mechanic telling me the labor hours it takes to do any repair how can i know that before i go to the shop?

by in Philadelphia, PA on September 01, 2012
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2 answers
ANSWER by , April 26, 2014
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ANSWER by , September 01, 2012
there are programs from manufacturers that give you that info. go to a parts store for the info Roy