Might be turn signal flasher
check fuses and relays and flasher and go from there
I replace my flasher fuse.Now they light up but won't blink.
check all your bulbs and fuses
yes i changed all of that but it still is not working so im wondering what else could be causing this
i have changed all my bulbs for a 1994 Bonneville still i have no tail lights for nite driving
have you tried replacing the flasher u need to replace the flasher can for the turn signals there are 2 one for hazards and one for turn signals usually found in the fuse box, and cost about 3 bucks
I have changed the fuel pump on my 1993 Pontic Bonneville, it still is stalling any clues why? could be Fuel Pressure Regulator http://www.youtube.com/watch?v=AKtR_yF7bi8&feature=related
it might be the hazard switch all the blinker circuit runs through it.
The signals and the emergency flashers have separate circuits, separate fuses, separate flasher relays. Start with checking the fuses, the bulbs, the signal flasher relay and wiring and if it still doesn't work it may be the signal switch is bad.
Check fuses and relays
check your fuses
It could be the turn signal bulbs, some vehicles use separate bulbs for the hazard and turn signals. It could also be a bad switch or wires for the turn signals.