shocks and dash noise

[willylama]

What shocks would give me a comfortable ride in my 2004 4.8L beauty. I still have the factory ones on with over 150k miles. Also what is that darn clicking noise coming from my dash when I turn on the heater? Is I easy to repair? I will like to add it is not 4x4

 

[07burb]

not sure of the clicking noise as there is not enough info to go on.

for shocks I like either belltech or bilstein.

 

[willylama]

I thnk its the actuators that are making the noise. It doesnt do it all the time just some times. Also the driver side will blow hot air from AC. Have to turn truck off then restat and everything is great. Any suggestions