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Heater blower speed fluctuating

Tiny
SOTOSON
  • MEMBER
  • 2012 CADILLAC ESCALADE
  • 80,000 MILES
The blower when on it is intermittent, goes fast and then slows down. I changed the resisters but the problem remains.
Saturday, December 28th, 2019 AT 2:48 AM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Is this for the front or rear blower motor?

Roy
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Saturday, December 28th, 2019 AT 5:06 AM
Tiny
SOTOSON
  • MEMBER
  • 4 POSTS
Front blower, heater in the back is fine.
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Saturday, December 28th, 2019 AT 11:15 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Thank you.

I posted the procedure below and attached some pictures for you for the replacement.

Roy

Removal Procedure
If equipped, remove the sound insulator panel. Refer to Instrument Panel Insulator Replacement.
Remove the blower motor insulating cover screws.
Disconnect the electrical connector from the blower motor.
Remove the blower motor insulating cover.
Pull the retaining tab down while turning the blower motor counterclockwise in order to disengage the blower motor from the heater/ventilation module.
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Saturday, December 28th, 2019 AT 11:21 AM
Tiny
SOTOSON
  • MEMBER
  • 4 POSTS
Thank you, just want to verify that is the motor that is causing the operate intermittently.

Thanks
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Saturday, December 28th, 2019 AT 11:30 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
If you replaced the resistor, then the motor sounds like it is locking up or seizing while it is running.

Roy
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Saturday, December 28th, 2019 AT 11:37 AM
Tiny
SOTOSON
  • MEMBER
  • 4 POSTS
Thank you, that took care of the problem. I appreciate you help.

Sotoson
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Saturday, December 28th, 2019 AT 1:53 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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Saturday, December 28th, 2019 AT 2:00 PM

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