No heat changed therostat and blower motor works still no heat ?

I agree with Dan.... The blower motor resistor is the problem

CHECK SEE IF HEATER BLOWER MOTOR WORKING, REMOVE HEATER BLOWER MOTOR HOT WIRE HEATER BLOWER MOTOR SEE IF BLOWER MOTOR WORKING BLOWER MOTOR FAULTY OR YOU HAVE FAULTY WIRING AT BLOWER MOTOR AND RESISTOR.

Yes cehck the fuse box for blower motor fuse, if they are good then take the blower motor out and power it, if it works then change the blower motor resistor.

If the blower motor only works on high mode, then its problem with blower motor resistor. ------------------ The blower motor resistor needs to be replaced.This will make blower motor work on all modes. ----------- Thanks.

did you check cabin heater under dash? if it is clogged you cant get heat from it.

you can try this, on the exhaust manifold there is a heat sensor you can replace this or take off the connection and with a small piece of electrical cable strip both ends put into the connection and that will put the fan on , if this fails then the fan itself is at fault [driver87]

Blower motor or resistor.

do you have power to it..or a bad ground around blower motor? is the head unit not signaling the blower to run?...calling it with A/C or heat or just fresh air ..try all settings and advise...good luck

If you can, check if there is voltage at the blower motor connector with the ignition on and the engine not running. If you have voltage, the blower is bad. If no voltage, it may be a bad blower switch, the blower motor resistor assembly, or the wiring between them.

The resistor assembly is on the evaporator housing under the dash on the passenger side and near the blower motor. The glove box must be removed to check this and the blower. A thermal limiter resistor is built into the resistor assembly and will open, ie melt, with excessive heat.

Without more details on this, it appears either your blower motor or the blower motor resistor assembly is bad.