2010 Yukon hvac question

[rfeller]

10 Yukon w/110K Suddenly front ac/heat does not work, however rear blower/control work fine. Very shortly after it happended I hit one of our many chuckholes and that seemed to kick it on for a day or so and then stopped. Went looking for chuckholes to try again but to no avail. I get nothing up front, defrost, vent or floor. Thanks for any help/advice

[carriedi]

not sure what your problem is. Is it that you don't get the hot or cold temperatures or is it you don't get the different modes, floor vent and defrost?

ac/heat (temperature) are from the blend door and the floor, vent and defrost are from the mode door.