Issue with heater

Reply Subscribe

Thread Tools

Search this Thread

Nov 9, 2014 | 07:39 AM

jjradtech

Thread Starter

Instructor

Joined: Jan 2011

Posts: 211

Likes: 3

Issue with heater

I have a 2012 base coupe. The issue with the heater is that it will
not blow warm air until I turn the heat setting up to around 85 degree
Any suggestions?

Nov 9, 2014 | 08:23 AM

RoadkingC6

Drifting

Joined: Feb 2012

Posts: 1,429

Likes: 113

From: Brick NJ

Could be a bad themostat, it's really easy to replace, could remove it and get a pot of boiling water and put the stat in to check to see if it fully opens, i would replace with a new one at that point regardless, just one way to see if that in fact was the problem before the new one goes in.

Nov 9, 2014 | 09:54 PM

tinman12

Instructor

Joined: Dec 2011

Posts: 101

Likes: 0

From: terry MS

check what the outside temperature ready is on the display. I just went through this problem with mine. Outside temp was stuck at 75' which I believe is the default for faulty sensor. I had to cut heat up to high to get any warm air blowing

Nov 9, 2014 | 11:47 PM

4SUMERZ

Race Director

Joined: Sep 2009

Posts: 11,351

Likes: 2,445

From: Eastern

Just for giggles, try this

Nov 10, 2014 | 08:11 AM

tinman12

Instructor

Joined: Dec 2011

Posts: 101

Likes: 0

From: terry MS

i had tried that before and it would not do anything on mine. press and held for several seconds each time. mine is 2011

Nov 10, 2014 | 09:23 AM

AORoads

Team Owner

Joined: Jun 2005

Posts: 46,295

Likes: 2,596

From: Northern, VA

St. Jude Donor '15

"In honor of jpee"

Never knew that reset thing. Is that in the owner's manual? I'll have to go look again. Thanks for the tip. To OP: if yours is a '12, it would seem you're still covered under 3/36 Bumper to Bumper (B2B). A trip now to the dealer might be helpful to at least set the process in motion vs. waiting until after your 3/36 has expired.

Nov 10, 2014 | 01:14 PM

jjradtech

Thread Starter

Instructor

Joined: Jan 2011

Posts: 211

Likes: 3

Heater

Thanks for the responses. I will try the reset. My car was originally sold
In Sep. 2011, so it is out of the new car warranty. But I bought a extended GM warranty
from Dennis back in June.

Nov 10, 2014 | 02:41 PM

Arclight

Advanced

Joined: Mar 2013

Posts: 73

Likes: 0

For what its worth have a look at the HVAC section of a factory service manual-you'll be amazed at how complex it is. Pretty tough for a DIYer to properly fix. PS: The factory manual recommends pulling the fuse for at least 60 seconds to reset the HVAC module.

But there is alot more to troubleshoot without a subscription to ALLDATA or a complete set of service manuals.