Jump to content

Recommended Posts

I have a 15 Silverado and live in Houston where it's been in the 90s.  I notice when my truck is on park or not moving such as at stop light, the AC blows cool air but not extremely cold.  However, when I start driving, the air gets very cold.  To be clear, the air coming out when I'm stopped or idling isnt warm or hot by any means, it's simply not as cold as when I'm moving.  Is this normal?

Share this post


Link to post
Share on other sites
I have a 15 Silverado and live in Houston where it's been in the 90s.  I notice when my truck is on park or not moving such as at stop light, the AC blows cool air but not extremely cold.  However, when I start driving, the air gets very cold.  To be clear, the air coming out when I'm stopped or idling isnt warm or hot by any means, it's simply not as cold as when I'm moving.  Is this normal?
Ytun on the ac when idling, does your aux fan come on? It should.

Sent from my SM-G965U using Tapatalk

Share this post


Link to post
Share on other sites
Just now, m3n00b said:

Ytun on the ac when idling, does your aux fan come on? It should.

Sent from my SM-G965U using Tapatalk
 

Forgive me, but how do I tell this?

Share this post


Link to post
Share on other sites
Forgive me, but how do I tell this?

No prob. Start your truck cold with the ac off. Pop the hood. Look at the fans in front of the engine. They should not be spinning. Turn on the ac, look at the fans and they should start spinning. The fans shouldn't run when the truck isn't up to operating temp with the AC off but should run anytime the ac is on.  That pulls air through the condenser; cooling it.

Sent from my SM-G965U using Tapatalk

 

 

 

 

 

Share this post


Link to post
Share on other sites
Posted (edited)

Thanks for your help.  Yeah they start when AC comes on.  The air is pretty cold when it's stopped or idling, it just gets a colder when moving or giving it gas.  Its not an emergency and I think I'll just make sure it doesn't worsen.  It's been like low to mid 90s here so it's working hard.

Edited by MegaCode360

Share this post


Link to post
Share on other sites

I am not an AC expert but I wonder if the freon is a little low if that could cause the problem you are having. Maybe someone could check it for you.

Share this post


Link to post
Share on other sites

It's because when your moving more air flow is passing through the condenser allowing for more cooling versus idling at a stop where the only air is being pulled from the fans.

Sent from my SM-G950U using Tapatalk

Share this post


Link to post
Share on other sites

I’m in a similar climate and don’t think I’ve noticed this.  Yes the condenser is air cooled but we have to assume his stop light intervals are normal and I think it would take an extended stop to produce this.  

 

Can you find someone with a duct thermometer and actually get measurements?   

Share this post


Link to post
Share on other sites

I'm still under warranty.  I'll take it to the dealer.  Thanks guys!

Share this post


Link to post
Share on other sites

Thats exactly what my '15 did. Took to the dealer low on freon, leaking condenser....a known problem. Replaced under warranty. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×

Important Information

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