One problem related to lose power steering has been reported for the 1997 Chevrolet Tahoe. The most recently reported issues are listed below.
When turning onto an on-ramp (usually right) the vehicle will momentarily lose power steering and the steering wheel will jerk right. This jerking motion also happens intermittently while driving at highway speeds with no turning involved. Even though there is more jerking motion on a turn both are extremely dangerous situations. This has been happening for several years.