Have a 12 Tl that lately sometimes when it's been sitting all day and you get in to leave the A.C. doesn't come on for like 5 or 10 min. Any ideas? Thanks

 

Ttt

 

Same thing happened to me. Random air would not come on even though it showed it was on high. Try hitting underneath glove box and see if it comes on. Had to replace blowermotor with resistor on 12 tl awd. Just like my old chevy but when the resistor would go out it would still work on hi tho.