Hissing sound in the back drivers side

[SWADE23]

I have an intermitant hissing sound in the back of the truck over by the 3rd row. But this only happens when i turn the heat on.... Sometimes it doesnt happen at all.... But when it does its a hissing that happens every 2-3min or so... But it doesnt happen at all when i put the heat on the floor setting... Only when i use the panel setting....

Sup with that!?!?!?

 

[mic_1011]

the hissing is coming from one of the rear vents not being opened or closed all the way. it is partially opened and causes a whistling sound

 

[PAPARAZZI]

Take it to the dealer, i took mine after hearing the same noise for about 6 months, they didnt charge me,,,,, they recharged the a/c

 

[mic_1011]

$95 just for the stealer to look at my car!!!!