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 on February 08, 2011
It sounds like you have an elictrical short in your wiring
ANSWER by on 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 on 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.
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