Sometimes the spring in the Gear Indicator just gets old.
Me and a friend took my gauge cluster off around the steering column, and took the indicator apart. There is a clear piece of plastic attached to [mine was anyway] orange wire, to a spring.
We just took the hoop off the plastic, tightened the hoop a bit, and all was good.
Really depends on the year, you've got a '97, I've got a '98.