Check the turn signal flasher. It should be mounted under the dash either near or in the fuse panel box.
Flasher and fuse
burnt bulb or fuse.
Perhaps you need to check a fuse.
This is a matter of the fuse or a bulb.
broken wire likely
Make sure that fuse is the right one (actually turn light fuse). Also check the bulb itself. Usually when the bulb (one of them) is burnt off the othe one flashing much more frequintly because of the power increase on the bulb which is alive.
It COULD be a blown fuse. Check the fuse panel. It COULD by a blown flasher unit. If the fuse is OK, change the flasher.
How do you get the fuse to slip out of the fuse box for a 1985 Chevy club wagon
1 fuse for all turn signals-try replacing bulb
Bad socket? Bad ground? Problem in steering column switch?
DRIVER SIDE, UNDER DASH, MOUNTED ON PASSENGER SIDE OF STEERING COLUMN Yeah it's there. Before make sure it isn't anything else,(fuse, bulb, etc.) It's not fun to get to that part.
replace the rear bulb if one side is out, if you had a bad fuse none of your turn signals would work.