Warm air at feet with window cracked

[Rex1]

Haven’t had this truck very long... just curious what’s causing the air flow at my feet when I crack the windows... doesn’t matter if it’s just a tad cracked or all the way down. I get the same amount of air flow at my feet...
bought it with a body lift installed and wasn’t sure if that’s the cause or what it might be. It’s hot in Texas.

 

[Rex1]

Haven’t had this truck very long... just curious what’s causing the air flow at my feet when I crack the windows... doesn’t matter if it’s just a tad cracked or all the way down. I get the same amount of air flow at my feet...
bought it with a body lift installed and wasn’t sure if that’s the cause or what it might be. It’s hot in Texas.

Adding. It’s a 97 k1500

 

[east302]

Throwing this out there- check the rubber boot at the steering shaft penetration at the firewall. It can come loose sometimes, just push it back into place.

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[Rex1]

I will try that thank you sir