Oh my 98 ZR2 just keeps throwing little things at me all the time.This time was neat.I was driving at about 65mph.I just happened to look down and see my tach doing a crazy dance.The needle went up banged off the pin at the end of the tach and down to zero over and over.Then it just quit.
Then once the truck was shut off and then on again the tach works fine.Ideas?