Two problems related to power steering pump have been reported for the 2005 GMC Sierra. The most recently reported issues are listed below.
When operating at low speeds,I would turn the wheel to left and steering felt sluggish,felt like a rubbing and feels like vehicle would stall. Brought to local garage, they were able to duplicate problem but had solutions. They checked power steering pump, brake sensors, serpentine belt, fluids. . . All checked out fine.
: the contact stated the vehicle looses power steering at less than 5mph or while stopped and applying the brakes. The vehicle was taken to multiple dealerships at least six times. During those occasions, the dealerships replaced the gear box, shaft sector, power assist hose, pump and the pressure valve. The power steering problem still exist.