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99 Cadillac Escalade heater blower

Tiny
BRIAN_DOMINY
  • MEMBER
  • 1999 CADILLAC ESCALADE
  • V8
  • 4WD
  • AUTOMATIC
  • 135,000 MILES
The main heater blower inop when cold. Have replaced blower, relay, resister coils. Control panel. It works about 15 to 20 minutes of drive time. Is there some other component in the system that I am over looking
Friday, January 14th, 2011 AT 9:25 PM

2 Replies

Tiny
BRIAN_DOMINY
  • MEMBER
  • 2 POSTS
It starts to work after 15 to 20 minutes of drive time. Then it will work all day.
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Friday, January 14th, 2011 AT 9:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
You replaced everything. Check to see if there is power to the motor when it doesn't work. If there is, my first guess is a weak ground. If there is no power, the only thing you can do is start tracing wires from the blower motor back to locate where the power loss is located.
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Friday, January 14th, 2011 AT 10:57 PM

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