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

can i repair this issue myself

Asked by for the 2007 Chevrolet Silverado 1500
Seasoned techs. have trouble repairing some evap.(emission) problems! Prob. need to get it scanned to see exactly what the trouble code is.
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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.