gnj3963

Hey can anybody tell me how to adjust the reverse lights coming on a 1984 C4..
When i put in reverse i have to wiggle the shifter to get lights to come on..
It is an auto trans 7R20...
jUST WONDERING IF IT NEEDS TO BE ADJUSTED FROM THE TOP OR DOWN SIDE OF TRANS..

THANX IN ADVANCE

billschroeder5842

If you have to wiggle the shifter to get the lights on, then you need to check your connections at the shifter

Pop off your console and you will have access to the connections

1984Z51auto

IIRC the back-ups operate thru the neutral safety switch on an auto trans car and it may simply be worn out. There is an adjustment procedure in the FSM, you use a gage pin to set up the switch with the shifter (and trans) in neutral. It is important to follow the service manual procedure because it sets up the engine to only start in Park or Neutral as well as setting up the back-ups to work in Reverse. A new switch doesn't require the gage pin method, you break off a tang It is adjusted or replaced from the top... the console must come out.