RepairPal Certified shops can diagnose and repair your 2003 Chevrolet Cavalier. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
If engine oil leak, most likely rear main crankshaft seal. If transmission fluid leak, most likely front trans. pump seal(s).
'MOST LIKELY'!! Best to get a mechanic to look at it and confirm.