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Fan on heater don't work on 2005 Buick Lacrose

The heat works but the fan doesn't

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More then likely it's the blower motor control processor , a electronic control module . Taking to a qualified technician an having it diagnosed would be your best bet. Has no relay ,no resistor block .
GMC Yukon HVAC Blower Motor Won Turn On

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Posted on Dec 07, 2017

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  • 4 Answers

Then you either have a blown blower motor relay or the blower motor itself is toast.

Posted on Dec 07, 2017

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Posted on Jan 02, 2017

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SOURCE: 2005 Pontiac Vibe heater fan working on high only

My 2005 Vibe did the same thing it was the heater resistor. It is located to on the firewall behind the glove box on the lower left side of the blower assembly. Two 5.5mm screws hold it in place (1/4 inch socket works too). I used a socket attached to a socket swivel to replace mine in under 10 minutes. Heater now works as good as new. I purchase mine online for $30 from rockauto.

Posted on Aug 24, 2009

inhisname
  • 76 Answers

SOURCE: Heat/AC Blower fan speed only works on High

hello, this sounds like a bad blower motor resistor!! its cheap and easy to change..if you need more info on locations let me know,, good luck.....marty

Posted on May 27, 2009

aaangie220
  • 202 Answers

SOURCE: fan switch on 2005 Buick rendevous

ASE mechanic:
blower motor regulators go bad because of the switching between low and high speeds. some times these are under the dash and require tiny hands and lots of patience.

Posted on Jan 27, 2009

  • 4 Answers

SOURCE: Heat/AC Blower fan speed only works on High

Alot of people have the same problem with the fan switch and blown bulbs. There really is no fix for this. Jeep really screwed up when designing the heater control assembly. The cheapest solution is to buy another unit off Ebay. Can always go to the dealer but be ready to PAY for there mistakes.

Posted on Jan 21, 2009

dgjtex
  • 405 Answers

SOURCE: Heater/AC Fan does not work in our 1998 Buick Century

Fan will be under dash on passengers side , Removing glove box might be needed, Gm also uses a blower resister ro control fan speeds. First check your fuse and then check and make sure your getting 12 volts to the terminal at the blower, You could have a blown fuse, a bad switch, or a bad resister , if your getting voltage to blower motor then most likely it will be the motor. These are not to difficult to change. I hope this helps, please be aware I can only guess at what the problem is from my past experience.

Posted on Dec 18, 2008

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I'm basing my answers on a standard Lesabre. Yours may not have the standard climate control.

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