I replaced engine and hooked everything up and when I turn key lights come on and everything but doesn't turn over
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I replaced engine and hooked everything up and I plugged battery in and it made loud electric noise without key in ignition so I switch the wires on the computer and then I plugged in battery again and now back to normal except now when I turn key lights come on and everything but doesn't turn over.
How long has your 2011 Chevrolet Impala had this problem?
RepairPal Certified shops can diagnose and repair your 2011 Chevrolet Impala. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Way way way too many variables and unknowns here to offer advice. You'll need hands on evaluation by someone near you who can do the proper checking of the electrical system, starting system, even turn the engine manually to see if it even turns. The concern about "switching wires on the computer" are highly concerning for one thing.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
