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Q:

ckeck engine light is on. ontar said it was emission sensor. can i repair it. on 2007 Chevrolet Silverado 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
can i repair this issue myself
(2) Answers
Seasoned techs. have trouble repairing some evap.(emission) problems! Prob. need to get it scanned to see exactly what the trouble code is.
I agree with pushrod, but I have one question... Did you recently put gas in the vehicle? If so, check that the gas cap is thightened at least 3 clicks. See if the light comes on again next time you drive it. If it does, go get it scanned for codes and diag.