why does my 2002 chevy cavalier over heat after i change the thermostat and the water pump
thermostat
The "heat maker" is broken. :(
Muffler Heat Sheild
no
try looking at your resistor pack on the passsenger side lower the blower motor down and there is a heat coil and resistor in there
Exhaust components rust out over time due to weather and the heat from the vehicle. On a 2001 Chevy Cavalier, when the muffler strap rusts, welding a new strap in its place will offer a complete and reliable repair.
I'd check the coolant level first, then the thermostat.
$52- $208 roughly. depends on if the heater core is bad.
Low coolant? Bad thermostat? Heater core airbound, plugged or restricted? Water pump not circulating coolant?
heat/ac actuator
Check your heat shield by the catalytic converter, and the strap around the muffler. The heat shield has a tendency to come loose, and the strap rusts on almost every 3rd gen cavalier I've ever seen