2007 Dodge Caliber Q&A

2007 Dodge Caliber Question: When I would put the key in all lights would like up then after started shut off

now the etl is the last light to turn off that and the check engine light ...but Not on when car is running...does this mean anything ? Plus when I haVe the ac on my car loses alot of power ..you can tell how different it runs. When I have the ac on and I start to drive off a sqwrilling noise come from the passenger front side of car . I have no idea wht these things mean please help ! -
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