Question about 2006 Buick LaCrosse

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2006 buick lacrosse heater core change

My heater core is leaking. No heat and major antifreeze smell when heat turned on. I've changed out every other component of the coolant system myself (new radiator, hoses, thermostat, water pump, coolant reservoir). Trying to avoid the outrageous price a shop will charge me for installing a $50 part. Need instructions for heater core change with pics if possible (I'm not very savvy on the technical terms in the online manuals). Any help would be greatly appreciated. Thanks

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  • 13 Answers

THIS IS A JOB FOR AN EXPERIENCED MECH. TAKE IT TO A MECHANIC WHO DOES SIDE WORK.

Posted on Nov 09, 2014

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5 Suggested Answers

Richie_asg1

Richard Perkins

  • 1036 Answers

SOURCE: 1996 Buick regal over heating

Hi,

Check the sensor and wiring from it for a short.

Hope this is an easy fix for you.

Posted on Jun 15, 2008

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Anonymous

  • 98 Answers

SOURCE: 1996 buick roadmaster keeps overheating:

A shotgun approach to repairs can really rack up the bills.

If your symptoms are loss of water and you have replaced the thermostat, you more than likely have an issue with steam. And that steam more than often comes from a bad head gasket. Most head gasket gasket failures seem to be confined to the water side initially, but let it go on bigger damage will occur.
You can buy a litmus test strip to dunk in the coolant. It will indicate if there are exhaust residuals in the water and thus a gasket failure.

However it may just be something simple, given that you have just about replaced everything:

have you given the radiator a good hosing inside and out?
is the radiator fan running when it should be?

Posted on Sep 07, 2008

canbruce75

Bruce Canfield

  • 1776 Answers

SOURCE: install water pump on 3.1 buick engine

Visit the autozone.com website and register the car information. It doesn't cost anything and you will have access to an online repair manual for the car. The steps for replacing the water pump should be available there. It's a handy resource. Hope this helped and best wishes.

Posted on Sep 12, 2009

Ray Keckeisen

  • 599 Answers

SOURCE: My 2002 buick rendezvous is overheating. The water

first check to make sure the cooling system is not air bound,takes a while to bleed off the air,try this and get back to me Thanks Ray

Posted on Nov 13, 2009

Jtemelcoff

  • 382 Answers

SOURCE: 03 Buick Rendezvous Overheating

If the top hose is hot and the bottom is cold, your definitely not getting circulation. You,ve already done alot of work to this vehicle so you have pretty much answered your own question. About the only thing left is the heater core. Of course, I dont want to be the one to tell you it is definitely the heater core because obviously I am not looking at the vehicle. But If i was a betting man, thats where my money would be.

Posted on Dec 14, 2009

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1 Answer

Are heater cores expensive to change in these cars


Hi Carol,what makes you think your heater core is leaking,is your antifreeze container low,if not then it's not leaking,could cost 3 to 5 hundred bucks,I just changed mine in my truck,it was leaking on driver side and my windows were getting fogged up.I had to lift the dash up on mine to do,i did it 10 years ago,so this time was easy,here's a link on replacing your heater core,Does your heater get the inside warm,does it have a musky smell?if it is leaking,then your antifreeze container will be low,has it been raining alot,you said in your other post that water is on the passenger side,rain water can come thru the intake vent. Repair Guides Heating And Air Conditioning Heater Core AutoZone com

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