I'm having a problem with the passenger side A/C vents on my truck. The A/C blows cold through the driver side vents, but only hot air is trickling through the passenger side vents. I assume that some vent solenoid is not working. Any ideas?

It sounds like a possible blend door/or motor that might be the problem ... I assume you are under 36k.... off to the dealer you go:cool:

Of course as luck would have it, I just turned 36K (close to 37K). I'm hopeful that the dealer might still cover it under warranty.

It's probably the temp. actuator. And yes the dealer should warranty it that close to 36k