Ne Wisconsin, driving on very cold and snow covered highways, the steering wheel became increasingly difficult to turn. After twenty minutes, lost all power steering. Vehicle was inspected for: Proper pwr strg fluid level (dip stick indicated full), any snow/ice obstructions between tire & inner fender (none), any fluid leaks (none), any puncture/ruptured hoses (none), any tire damage or improper inflation (all perfect). No noise from power steering pump at any speed, no pump shaft seal leak or pump bearing noise, pulley/shaft are not overheating (no excess friction). Vehicle has only 41K miles, has been treated with kid gloves and is serviced regularly at 3500 miles vs GMC recommended intervals. Though the vehicle was in 4-wheel high drive mode at the time, selecting 2wd, AWD or 4WD lo makes no difference. Vehicle is always parked in a heated garage and after sitting in 60F for 24 hours, problems remains. With all the steering complaints for the vehicle on this website (I have 11 printed, most recent 12/23/07), I cannot fathom why you continue to reply to owners with the same, canned letter? obviously, steering is a critical item on any vehicle. I truly feel a smaller/less experienced driver may have had a serious problem with the same incident with the same road conditions with horrible consequences. Folks, something is wrong with GM's design of this pump. Failures are virtually unheard of for almost every other make & model, import or domestic. Please assist us with this ever-increasing problem. Now I am left with the distasteful task of arguing with the GMC dealership.

- Sheboygan Falls, WI, USA