Two problems related to steering failed have been reported for the 1997 Chevrolet Tahoe. The most recently reported issues are listed below.
Steering position sensor failed, causing the power steering system to lose resistance at speed. Incident occurred while driving on a sweeping left hand turn. I was applying constant light left hand pressure on the steering wheel when the power steering system lost resistance and the wheel turned freely and quickly to the left. Before I regained control I had moved 1/2 lane to the left. The problem was very intermittent at first but grew increasingly more regular. The steering would seem to twitch and cause momentary loss of feel. I finally replaced the steering position sensor and the problem was fixed. When I purchased the replacement part at the Chevrolet dealership, the parts counterman new exactly what I was talking about and commented that it must be a big problem because they had a whole bin of steering position sensors. It is my contention that this should be a recall item. The sudden loss of steering control can be very un-nerving.
Steering eov sensor failure caused steering twitches or jerks when changing lanes. Yh.