On my 92 Suburban I only get hot air even though I turn on the A/C or
vent and sets the temperature to cold.
If have found the motor controling the hot/cold door (behind the glove
compartment). The door works fine and the air gets cold, when I move it
to the "cold" position, but the motor turns it to "hot" all the time.
If I disconnect the wires from the motor, and manually sets it to the
"cold" position, and then reconnect the wires, the motor immediatly
turns to the "hot" position.
I have tried replacing the control module and the motor (with used
parts). No changes.
I have tried pulling a bit in all the connectors while connected, to see
if I could find a bad connection. No luck.
Do you have any suggestions ?
What can I expect to measure on the wires to the motor ?