check engine light on, failed emissions test, could it be a vacuum leak? or???? on 2004 Buick Rendezvous

2004 buick rendezvous. it's not the gas cap, or pers sensor. would a vacuum leak make it fail emission test? what would a ballpark figure be for cost to fix. Could it be part of the recall??

by in Ware, MA on April 25, 2012
1 answer 1 comment
ANSWER by on April 25, 2012
several things will cause a failure. seek a diag from a good mech that has a smoke mach and good scan tools
COMMENT by on April 27, 2012
Thanks, I'm going to Autozone this morning to do the check and then to the mechanic. Thanks for your reply.

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