Question about Buick LaCrosse

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Both low beam headlights went out on my 07 Buick Lacrosse. All other lights work fine. I checked the bulbs,and they were fine. The fuses were also fine. I was told that the relay switch could have gone bad, but i dont know where its located

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  • shenika_reid Apr 05, 2011

    Thank You so much. I was afraid of being over charged,and im sure this is something my uncle and I could fix ourselves. Once again thank you and im sure you will be hearing from me again :)

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Hello
The switch that causes this is the one on the steering column that you pull to dim the headlights, it is also known as the Multifunction switch, it is the turn signal switch and wiper control as well. The switch is about $60.00, and is available in the aftermarket. To replace the switch disconnect the negative battery cable, then remove the lower dash panel under the steering column, a few screws hold this on, next on the bottom of the **** shell covers of the steering column there are about four scores holding the tow halves of the cover together, remove them they should be #2 Phillips, unsnap the covers from the steering column, unplug the wire connectors to the multifunction switch, remove the screws that hold the switch to the steering column and remove the old switch, reverse to assemble. Just so there is no confusion as to what switch I mean a picture and part number are below.
AIRTEX / WELLS Part # 1S8338 (Headlight Dimmer switch)


both low beam headlights went - emissionwiz_147.jpg

Posted on Apr 04, 2011

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How much does it cost to repair a HDM module on a 2007 Buick lacrosse


  • Subject of a RECALL so free
  • http://www.dealerrater.ca/recalls/Buick/LACROSSE/
  • 2007 Buick LaCrosse Recall Item Affected: EXTERIOR LIGHTING: HEADLIGHTS Date Announced: 08-14-2015 Description of Recall: General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL, 2006-2008 Isuzu Ascender, and Saab 9-7x vehicles. In the affected vehicles, the headlamp driver module (HDM) may overheat and fail, causing the headlamps and daytime running lights to not illuminate. Action Need To Fix It: GM will notify owners, and dealers will replace the HDM, free of charge. Interim notices were mailed to owners on September 2, 2015. Dealers will install a new HDM Service part as an interim repair. Owners will receive a second notice when remedy parts are available. Owners may contact Buick customer service at 1-800-521-7300 or Pontiac customer service at 1-800-762-2737. GM's number for this recall is 14291. FIND YOUR LOCAL Buick Service Centre
  • Buick Lacrosse Fires Caused by Faulty HDM Module? ' R.J ... https://rjhillconsulting.wordpress.com/2014/07/23/buick-lacrosse... 2014-07-23 · On 7/2/15 my 2009 Buick LaCross fuse box caught fire, I have since then learned that it began in the HDM module. There is a Technical Service Bulletin for ...
  • What is a Buick hdm module - Answers.com www.answers.com > ... > Pontiac > Pontiac Grand Prix > Grand Prix SE It is the headlight drive module. It is used for daytime running lights and low beam operation. It works in conjunction with the light sensor on top.

  • Buick Lacrosse Fires Caused by Faulty HDM Module? ' R.J ... https://rjhillconsulting.wordpress.com/2014/07/23/buick-lacrosse... 2014-07-23 · On 7/2/15 my 2009 Buick LaCross fuse box caught fire, I have since then learned that it began in the HDM module. There is a Technical Service Bulletin for ...
  • What is a Buick hdm module - Answers.com www.answers.com > ... > Pontiac > Pontiac Grand Prix > Grand Prix SE It is the headlight drive module. It is used for daytime running lights and low beam operation. It works in conjunction with the light sensor on top.
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    One high beam not working 2006 Buick lacrosse


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    Low beam headlight - passenger side - on my 2006 Buick Lacrosse does not work. I've tried a new bulb - no help. The fuse - underhood fuse box - for the low beam is good. There is no voltage to that fuse...


    From Info I have looked at I believe under hood micro switch relay 35 is for low beam and 34 is for high beam. It also looks like you have a different fuse for each light. The relay are for both low beam or both high beams. each headlight has its own fuse. I believe #4 fuse under hood is for passenger side low beam. fuses 1-4 under hood are for the four headlights as I understand the info I have seen.

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    The low beams on my 2006 buick lacrosse wont work the bulbs and fuses have been replaced but they still wont work


    Shannon, you did not state if you checked for voltage at the fuse location-or better yet at the bulb location-
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    Remember, the relay supplies the power to the headlights.
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    The relay under the hood may have gone out. We had the same problem on our 2007 Buick LaCrosse CX. The bulbs were fine, high beams worked, all turn signals and everything except the low beams turned on. Turns out the relay had gone bad.

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    it seem that all your vehicle have electrical problems. is better to make a electric inpection to the dealer.

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