heater not blowing on 2003 Cadillac DeVille

When I slam my car door sometimes it will come on

by in Saint Paul, MN on February 08, 2011
3 answers
ANSWER by , February 08, 2011
It sounds like you have an elictrical short in your wiring
ANSWER by , February 21, 2011
Sometimes there is a bad connection or an exposed wire/connection. If you hit with hand directly under the glove compartment (a little to the left) and it starts, then most likely connection problem.
ANSWER by , May 30, 2011
If the blower motor is intermittent I had the same problem on my '03 - remove panel under dash on passenger side - look up and see the blower motor plug - all I had to do was to wiggle the wires around and the motor started to run continuously - changed the motor cable location slightly so that stress was different on the motor wiring at the connector - been working great ever since.