Bad Heater Behavior?

cccjrsbox · January 20, 2020

Group - When aimed at the floor only, I get as much or more heat from the windshield vents and side window vents. Cooks my face long before my feet. My prior trucks would blast the footwell. What do you experience? (2019 TB LT here). Thanks

Moend · January 25, 2020

I noticed the same thing on the sides (mirror vents) but didn't noticed the one from the windshield vent

I usually switch it to feet only. But I also run it at 75°F

towdog333 · January 25, 2020

My only complaint is an it's only minor, it seems my heater takes to long to get hot

cccjrsbox · January 28, 2020

Can anyone else weigh-in. Don't want to arrange for a dealer visit only to hear its normal. Thanks!

Taz56 · January 28, 2020

My issue is also the amount of time it takes to get hot. Past GMC trucks were faster, even the wife's Audi is 3X faster.

I also find the windows still fog up if I have all three on at the same time., I now typically turn forward vents off and only use feet and defog.

Dranger · November 1, 2023

I have the same problem with the heater when on floor heat , most of the air comes out the defrost . My face is hot and feet are cold. Been to the dealer and they said that is the way it was designed. My 2007 Duramax had plenty of heat on the floor, I disappointed in the new truck.