Heater issues

[JayL]

Does anyone else have heater issues? Mine all started last year, it was serviced and the thermostat needed to be replaced. Last week problems started again. The "4" setting never works, heat cuts out after 15 mins of driving and then will come back on. I drive about 1hr20mins one way to work and every morning it is like clockwork, when the heat stops blowing.

 

[Natesriv]

the fan speed #4 stops blowing? does it blow heat on #3 all the time

I've never seen a bad thermostat first, how that would affect the blower I'm not sure.....

is your at rest, cold engine coolant level at the right height?

 

[JayL]

Correct #4 works when it wants to, I need to be doing atleast 50mpg for the heat to actually work. coolant level is fine. Looks like this think is going back to the shop.

 

[Natesriv]

that sounds like the relay/or switch is bad..or motor, but it's definately electronic..

thank goodness for bumper to bumper (Still a pain to have to go back to shop though)

 

[JayL]

that sounds like the relay/or switch is bad..or motor, but it's definately electronic..

thank goodness for bumper to bumper (Still a pain to have to go back to shop though)

Thanks for the input, I need to get it in the shop soon because my warranty is almost up

 

[Natesriv]

yeah, before you bring it in, make sure you do a thorough list of the things you might want looked at...while it's still free

Anyone else on the forum have some advice?

 

[JayL]

yeah, before you bring it in, make sure you do a thorough list of the things you might want looked at...while it's still free

Anyone else on the forum have some advice?

This should be covered under powertrain correct?

Thanks again man!

 

[Dragcamaro]

I've got a heater issue with my car. If it's idling it typically won't blow hot air. The engine can be completely hot but it blows coldish air unless you rev it a few times. Then it will blow hot for about ten minutes and then it repeats

 

[Natesriv]

isn't there a baffle or something which regulates the internal airlfow to blow more hot/cold?

In my old Riviera there were several acutators and if one didn't work, you'd never get the correct airflow for the selection you chose....

 

[Chevrolet Customer Care]

Hello All,

If any one needs assistance once you have your Chevrolet dealership look into this, please let us know. You can always send us a private message.

Erica Tiffany
Chevrolet Customer Care

 

[JayL]

Hello All,

If any one needs assistance once you have your Chevrolet dealership look into this, please let us know. You can always send us a private message.

Erica Tiffany
Chevrolet Customer Care

Took my Sonic to my dealer. It is the heater regulator. The dealership is saying that my bumper to bumper is up and the part will not be covered. It they would just have replaced this part last year when I was having heater issues. I wouldnt have had this problem. Dealerships are very sneaky

 

[Maddmatts]

It sounds like thermal overload protection of some sort. Better than the fan-speed regulators used on the late 90's J and N bodies. Once the regulator packed it in, that setting was lost until it was replaced.

I don't know why you need the #4 setting all the time though. I've only needed it for a few minutes at a time to de-ice windows when it was -30C. You get hotter air at lower fan speeds since the air spends more time getting heated in the heatercore.

 

[Chevrolet Customer Care]

Hey JayL I'm sorry that you are dealing with such a frustrating situation. If you would like for us to see what options may be available to assist you or to call your dealership or find you a new one please send us a private message. We will see what we can do to assist in getting this resolved.

Jackie
Chevrolet Customer Care

 

[sx sonic]

I've got a heater issue with my car. If it's idling it typically won't blow hot air. The engine can be completely hot but it blows coldish air unless you rev it a few times. Then it will blow hot for about ten minutes and then it repeats

Sounds like text book air in the lines.

 

[JayL]

It sounds like thermal overload protection of some sort. Better than the fan-speed regulators used on the late 90's J and N bodies. Once the regulator packed it in, that setting was lost until it was replaced.

I don't know why you need the #4 setting all the time though. I've only needed it for a few minutes at a time to de-ice windows when it was -30C. You get hotter air at lower fan speeds since the air spends more time getting heated in the heatercore.

i dont need #4 all the time its the fact that the setting should work

 

[attrapereves]

Has anyone noticed a slight burning smell when running the heat?

 

[sx sonic]

Not I

 

[davecerv]

Has anyone noticed a slight burning smell when running the heat?

Omg yes! It's been cold down here. When I have the heat on windshield running like on halfway hot for a while I start to smell a burning smell maybe like a plastic smell. So I just move it to be less hot. It has always let out a smell though even with any air going thru that windshield vent. That never happens with the air/heat going thru the main vents though.

 

[TracyJ]

I am a GM employee and I own a 2012 Sonic LTZ. I am having heater problems now as well and noticed my coolant level was low so I filled it. Heater still doesn't work. Guess I will be taking to dealer.

 

[Chevrolet Customer Care]

Hey TracyJ,

Sorry to hear about the concerns that you have experienced with your heater and coolant level. Let us know how your dealer visit goes or if you need any guidance along the way.

Sincerely,

Jonathan A. (Assisting Jackie)
Chevrolet Customer Care