Code 7E8, second time this came up. What's wrong?

Asked by Guru9CD362 Jul 13, 2021 at 11:02 AM about the Chevrolet Silverado Classic 2500HD

Question type: Maintenance & Repair

The gas cap is fine, Is it a air problem?

1 Answer
27,025

taver91 answered 3 years ago

This could also be a hole somewhere in the evap line, not just at the cap interface. Usually, this is found with a smoke test.

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