i have a 94 sts the heater/ AC is not working i turn on the AC the enginecooling fans turn on but the blower will not blow .... so how do i check my blower? it has 3 wires, a power, ground and a lead from the programmer......it has the power and ground but how do i check the lead from the programmer ?
thanks for the help

 

I have changed 40, 50 or more of these blower motors.
If it has power and ground to the motor and the motor does not run it's no good.
I know it's a big $$ part and you want to be sure, but no one in our shop has ever misdiag one by checking it this way.


If you really need it i can dig out the 94 manual and go through it with you.
It gets somewhat in depth using the OBD to override the programmer and compare commanded values vs actual values.

send me a PM Sunday night or early Monday morning if you need more help.