I am Just showing you how my fuel switch works on my GMC Truck by turning the switch on the left tank or the right tank of my truck!! When I first got my back in ...
The fuel guage will go past full when there is an open circut. This could
mean that the wire to the sender of that tank is bad, the sender is bad, a
bad ground on that tank, or your switch is bad. I will be posting a video
on replacing this switch soon.