[dodge2500v10]

I have a 2001 2500 v10. when the heat or ac is on and the switch is on anything other then the defrost, when I get on it or start to climb up a hill it will switch to the defrost, but when I get off it it switches back to what ever it is on.

 

[weaktruk]

Many post about this $4.00 check valve. 2 min. fix.

 

[JustRamIt]

http://dodgeram.info/tsb/1996/24-01-96a.htm
Here ya go man :bigthumb: