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Q:

engine light stays on. how can i tell what the cause is ? on 2007 Pontiac Grand Prix

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
can i find the cause myself,without takeing it to the shop
(1) Answer
go to you local autozoe the check engine light comes on for a emission related fault al scantool will tell you why the light is on.