[Lonnie Lance]

No matter where set the temp on my ac it blows hot air on driver side and cool on the passenger side, making the truck unbearable in the summer. It's a 2007 ridgeline with 50k miles.

 

[e_piph_a_ny]

http://www.ridgelineownersclub.com/forums/71-problems-issues/103042-passenger-heater-blows-cold-air-always.html

http://www.ridgelineownersclub.com/forums/5-interior/38372-heater-blowing-out-cold-air-everywhere-except-driver-side.html

 

[donuteater306]

Sounds like the left blend door motor died. Check this thread..

http://www.ridgelineownersclub.com/forums/71-problems-issues/101738-blend-door-actuator.html