Jump to content

  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

heat issues anyone?

Stacy Crute
 Share

Recommended Posts

Stacy Crute Enthusiast

Stacy Crute

Posted
Posted (edited)

2015 chevy 1500.. 3400 miles. A couple of times the heat didn't work. It always did "next time".. the other day I had to take a 3 hour drive.. it didn't work the whole way there...stopped for an hour..headed back still with no heat (it was 42* so it was not pleasant)

 

Took to dealer - they said they cant find anything wrong, of course, and of course the he was working fine.

 

Its only done this a couple of times in the past 2 months now.

 

Anyone experienced anything similar? It blows out air, and it will adjust the fan speed properly (or what I'm guessing WOULD be properly if it was blowing out heat) based on the temp of the cab. Even when taken off of auto and just turned temp to hi and fan speed up, with AC button off, it was still blowing cold air.

 

Any ideas? Could it somehow be user error? (doubtful)

 

Also when the AC button is on, even when its on heat, is the AC really still running? seems dumb that lights always on even when you have the temp high and its blowing heat.

Edited by twentythreemx
Link to comment
Share on other sites
TJay74 Senior Enthusiast

TJay74

Posted
Posted

If you have not had the HVAC module updated get that done first. Mine was the same way, heat had to be turned to 80° before I would get heat, or if I turned the system off and then back on it would produce heat. Also yea if you have the AC the compressor is running as it will be pulling humidity from the air.

Link to comment
Share on other sites
Graphic Enthusiast

Graphic

Posted
Posted

Also yea if you have the AC the compressor is running as it will be pulling humidity from the air.

When you have the defroster on the AC runs by default. At least it did on mine. Remote start fires up the defrosters when cold, so the AC was running. This blows dry air on the windshield to get it defrosted faster.

Link to comment
Share on other sites
  • 4 months later...
Stacy Crute Enthusiast

Stacy Crute

Posted
  • Author
Posted

Just wanted to bump this post back up from the dead. I have not had a single problem with my heat all winter long. Now that temps have started to warm back up, I had this issue today for the first time since probably posting this or shortly after posting it (4+ months ago)

 

Wondering if its something to do with this certain temperature (it was about 39 this morning when it happened) and temps would have been similar when this originally was happening.

 

Anyways, it was a cold ride to work this morning. Took it to dealer before when I had problems and of course they couldn't find anything wrong.

Link to comment
Share on other sites
  • 4 years later...
Ben JW New Member

Ben JW

Posted
Posted

Hello Everybody,

 

I have a 2018 GMC sierra denali 6.2L, and a few weeks now, the heating and A/C is not working.

When I put it into manual blowing, and not automatic, I hear the blower start and shortly after stops.

 

Does anybody know what the cause is of this problem?

The garage here, have connected the car to the computer, but no errors or whatsoever.

 

Sorry for my bad english, i am from belgium!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Content

    • John Crouse
      Low Voltage.....?
      By John Crouse
      Hi All. 
      I have got a real puzzle. The volt meter (analog) on my dash when cold reads just under the 14 volt mark. As it warms up it drops eventually to just above the red zone. I have changed out all my cables with heavy duty cables, cleaned all grounds I could find, being that both were old anyway, changed alternator and battery for top pole battery., swapped out Ecm (swapped back), and still the same. Here is the real puzzle for me. I have checked with my multimeter the continuity of the battery cables and when running, tested the volts. With multimeter everything is good to go and reads 14 volts. So guys, what do you think? 
    • Cody Shandley
      2017 6l80 operating temps
      By Cody Shandley
      2017 1500 SLT, 52kmiles, stock other than GM/Borla.  Truck is never used for towing, but is my daily driver. I noticed recently there is an "odd" upshift between 2nd and 3rd at random times.  Usually after driving for a while. Took it in to the dealer who says all is good, no burned fluid and can't duplicate the issue--they say they took it up to ~190.  I drove the truck about 470 miles this weekend on vacation after dealer cleared it, but monitored the tranny temps more closely and noticed on the long highway drive with minimal cargo/passengers temp is sitting around 225-232. Ambient temps in the upper 90's. 
       
      This seems high to me with very little load, but I never really paid attention to temps prior to the shifting issue... so no baseline to compare to. What temps are expected/normal?  
       
       
    • Jerryk105
      2014 GMC Sierra with 140k miles?
      By Jerryk105
      Is it a bad choice to buy a 2014 with 140k for $17k a bad idea? If I do buy what mods should start first?
    • Andrew18
      Radio fan stays on
      By Andrew18
      So I just got a 2018 Silverado 2500 and am wondering if anyone has experienced this in there’s.
       
      when I turn my truck off and then open and shut the door to make the radio turn off I can still hear what I can only assume to be the fan in the radio stay on. If I lock the truck it turns the fan off for a second and then it comes back on. If I push the power button on the radio it shuts off but again comes on. Anyone have any thoughts or does this happen in anyone else’s 2014-2019? It didn’t happen in my 2016 that had the same infotainment center that is the reason for my concern. 
    • SizzlingSkilletz
      2015 8L90 Trans Fluid Temp Sensor & Harness
      By SizzlingSkilletz
      I am looking to replace my sensor and the harness as they are known to be bad and causing the p0711 code. In my research I found the 2015 has a split harness but they changed it in 2016 to a one piece harness and then I believe they went back to the split one, not sure which year. 
       
      What is the part number for the sensor and harness? I've looked everywhere and can't find nothing, plenty of threads but noone has mentioned part numbers and acdelco website does not have a part listed in their catalog for that year.. nor does any parts site like napa or autozone

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    239.4k
    Total Topics
    1.4m
    Total Posts

  • Member Statistics

    290,996
    Total Members
    8,960
    Most Online
    Rodney Blackburn
    Newest Member
    Rodney Blackburn
    Joined


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

  I accept