Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.Can you start first with checking to see if both heater hoses are nice and hot at the firewall with the engine running and at normal engine temp. If so then before we try anything else, try resetting the system, to do this remove the negative battery cable for a few minutes . After doing so , reinstall the cable and see if normal air flow returns. Let me know and we can work from there.
Both hose need to be to hot to hold if you have good flow through the core.
That would be a good place to start and when doing so make sure the cooling system is full and has no trapped air.
Your very welcome and thank you as well
I would suspect you have a control issue to the rear vents. Unfortunately Im not very sure I can diagnose this from here.
Unfortunately I am not going to be able to diagnose this for you from here. This is going to require some hands on testing. I will open the post back up for you and if another expert has something different to offer they will respond back.
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Do you still need help with this here?
Let me know so we can continue,thanks Pete.
Was the under dash HVAC programmer replaced at all?
I apologize for the delay as I had to run out for several errands yesterday and couldnt make it back here.
Does your model display the outside/ambient temp and if it does what does this temp read?
O.k.,your model uses an in car temp sensor and two solar sensors to help regulate what temp the air blows out.If the in car temp sensor or one of the solar sensors is sending an incorrect signal this will cause this fault here.Unfortunately after searching my info and the web I am unable to locate the exact location of these.Usually the solar sensors are top of the dash near the defrost duct and the in car temp sensor is placed at the heater vent or dash vents inside the vent housing.If you can locate these sensors unplug one of these at a time and see if the system starts to operate properly.If it does then the sensor that was unplugged needs replaced.I suspect with all that has been done here one of these sensors is the cause needing replaced.
If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.
The two like a bulb in defrost grill are the light sensors.My info isnt showing exactly how these remove.In some cases the defrost grille removes and then they twist out of place in almost all cases.There should also be an inside ambient sensor out of one of the vent or heater ducts that can cause this as well.Try unplugging these and see if the fault continues or if when one is unplugged the fault is no longer present as this would be the one needing replaced.
Yes you can try this and see how it operates then.
Your welcome.Let me know if you need anything else here and feel free to rate my help.
I apologize for the delay.The web site is having some issues and our previous conversation is not showing up here.Can you possibly re post what we have covered on this already or what has been done already.If not let me know and I can contact support to see if I can get this info,thanks Pete.
Unfortunately the web site has some issues here and this is a known issue,the info still isnt showing up for me here.Let me send this in for them to correct this and I will get back to you as soon as I hear back from them if this is o.k. with you.
I have sent this in just waiting for the fix then I will post back.No need to reply until then.
O.k.,I was able to get the info from the web site here on our previous conversations.I have all the info now.Did you still need help with this here?
Was the heater core hoses checked to make sure they are both very warm to hot to the touch with the engine warmed up and heater on or is one allot cooler then the other?
Unfortunately this is a tough one for me to answer myself here with all that has been done.I have to let someone else here try and see if they can help further.
I will open your question up for others here to see if someone else can assist further on this as there may be others here that may have more info on what to check or do with this issue.I hope you can get this resolved with ease.No need to reply to my last post here unless it is a last resort as it will keep your question locked to me and others will not be able to view it.If you feel you want to continue to work with me on this feel free to reply at any time but keep in mind in some cases it can be difficult to fully diagnose or help repair this without seeing your vehicle.