Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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P0455 means you have a evap leak, usually means the purge solenoid, vent solenoid, or gas cap is leaking in that order. P219A means fuel trim is lean which would indicate a vacuum leak, here is a list of things to check. Let me know if you have questions, thanks.
How does vehicle run? Does it idle rough or lack power under hard acceleration?
These two codes are unrelated. First one the same thing I said would apply and 2nd code most likely means you have a vacuum leak if it idles rough but has good power while driving. Let me know if you have more questions, thanks.
That looks like a pressure switch for AC which would be unrelated to problems.
Where exactly are we looking in the picture? Can you take another picture further away? Thanks.
If fuel trim is good at idle but higher under hard acceleration this points toward restricted filter or fuel pump. If high at idle but good under hard acceleration this would point toward a vacuum leak. If high either way then mass airflow sensor or oxygen sensor. Let me know if you have more questions, please do not forget to rate answer, thanks.