When I turn my steering wheel all the way either right or left, it squeels a little? Normal or a common issue? 05 with 38k

 

If you mean turning it to its MAX, then it is normal. While you can do it, I have heard of it actually doing harm to the pump.

 

That's your truck appealing to your common sense to let off a little. It's most likely the pressure relief valve limiting pressure in the pump when you set the steering against an impossible load (the steering stops). Just don't sit there and hold it against the steering stops all day, and it will be fine.

(not that you were doing that, just saying it in case)

 

I try to stay off the stops at all cost, to save taxing the pump. I do this on all my vehicles.

 

its actually not a squeel. I heard it today and it mostly when I turn the wheel to the left. Its more of a very silent hissing (snake) noise but you can only hear if you listen carefully and the radio is off. Could it be that my power steering fluid is low? If so, where exactlty is the fluid resevoir anyways?

 

It's still probably the pressure relief valve on the pump. Squeeling is generally a slipping belt from the pump getting hard to turn due to being run against the steering lock. Now that I think about it, these trucks don't have belt driven power steering pumps. The hissing would probably be it. If it's only doing it against the locks, you won't be low on fluid. I can't remember exactly where to tell you to check right off the bat. It may be a dipstick built in to the cap of the pump itself. That's the most likely scenario-the other would be a reservior somewhere else under the hood, linked with hoses to the pump and steering box. Best thing I can tell you is to poke around under the hood a bit and find it.