Where is the backup light switch located on 99 Chevy cavalear?
that is usually mounted on the transmission case
My turn signal on the passenger side works but not on the drivers side unless i hold the switch down part way t turn left what can be wrong plus my backup lights don't work i have a 1995 Chevy lum?
If the turn signal switch will not lock into the detent position on one side or the other, then the detent is broken. You will have to replace the switch, not an easy task. The backup light switch is related to gear selector position, and is probably located in the steering column as well. I don't know if this is related to the turn signal switch, but it does not sound like it.