Squealing when starting the car
A loud squeal for a few seconds on a cold start, especially with the AC on, is classic serpentine belt slip. The belt has glazed, stretched, or the tensioner has weakened. Texas heat dries rubber belts faster than in cooler climates.
Squealing when braking
Most brake pads have a metal tab that contacts the rotor when the pad is nearly worn out, creating a high-pitched squeal. Dust, glazing, or cheap pads can also squeal. If it turns into grinding, the pad is gone.
Squealing when turning the wheel
Possible causes include low power steering fluid, a worn power steering belt, dry suspension bushings or ball joints, or tires scrubbing at low speed in parking lots.
Squealing when accelerating
As RPM rises, a slipping belt squeals louder. A failing idler pulley or alternator bearing can also chirp or whine.
How urgent is a squeal?
A belt that breaks takes out charging, AC, and often the water pump — so overheating follows fast. Brake squeals give you a short window before rotor damage. Either way, have it inspected soon.