what constitute an evap.leak,and where to find this leak?
evaporation leak on 2002 Chevrolet Blazer
BEST ANSWER by dandd ,
May 13, 2010
This is a pretty large subject. Here is an article I wrote about for 1 of the more common Evaporative System Codes and there are several. You could start with a new gas cap from the dealer, as Chevy gas caps tend to leak after awhile.
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