what constitute an evap.leak,and where to find this leak?
Chevrolet Q&AAsk Your Question
2002 Chevrolet Blazer Question: evaporation leak
Answer #1dandd May 13, 2010, 22:34Master
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.