i have a 2005 gmc sierra i'm having problems with my power steering when i turn the wheel to the left i have no power but when i turn it to the right it works perfectly nothing was broken on it it turns to the left easy when the truck accelerates but itc hard at slow turns can anyone help?

Sounds like a dealer problem. You are probably already out of your warranty.

Or try asking your question over at http://www.chevytalk.org/fusionbb/index.php

There are some dealer cetified mecanics that are on that board all the time that might be able to address your problem

But come back here and let us know what you found out... I'd like to know the cause.

check out your ps pump output pressure on high side hose.

The problem will be the steering gear box. The pump only makes pressure. It doesn’t know left or right

After 11 years, he has probably found the problem.