Intermittent A/C and heater not working issue

2004 CHEVROLET MONTE CARLO
163,521 MILES • 3.4L • AUTOMATIC
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BILLIE NOLTE
  • MEMBER
  • 1 POST
Having a problem with my heat or A/C to come on. sometimes it will with no problems but some times it wont even turn on. I have replaced the resistor but that did not fix the problems. any suggestions?
Oct 28, 2019 at 10:53 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

Do you mean the blower motor is not working?

If you do, I would verify voltage to the blower when it does not work. The resistor is a common failure but the motor itself is also very common.

Roy

BLOWER MOTOR REPLACEMENT

REMOVAL PROCEDURE


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1. Remove the right side instrument panel insulator.


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2. Disconnect the blower motor electrical connector.
3. Remove the blower motor mounting screws.
4. Remove the blower motor.
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Oct 29, 2019 at 12:22 AM
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