On a 1990 Buick Riviera where is the flasher unit for turn signals located?
Usually under the dash near the fuse panel or in that general are on American cars its usually a little square box and on most foreign cars are mostly round with prongs on one end.
The turn signal flaher is located on the drivers side, under dash, above brake pedal, mounted on a support bracket.
#2 : In addition to the turn/hazard/chime/etc box (drivers side/under dash above
brake pedal/attached to bracket).....there is a "turn/hazard module" at least on the
89 Riviera and others.....located in console/drivers side "behind" the CRT controller box
and looks like an aluminum "heat sink" like those on computers. This "module" has a
circuit board attached to one side. Don't know if the board can be fixed, but, can be
found and replaced with another from salvage vehicles.
I've got a '96 Riviera. The flasher module on my car is located behind the dash, about in the middle of the car, fairly high up on the firewall and is a PAIN to get to! I have a '92 Riviera. My car has bucket seats and a console in the middle. On the left and right side of this console ... by the gas peddle on the drivers side, is a fuse panel access…
Under the dash, above the brake pedal. There is a panel over the brake pedal and the flasher is located behind it. There are two screws that need to be removed, then the panel can be pulled down low enough to gain access to the flasher. There's probably a way to remove the panel itself, but I couldn't get contorted into a position where I could find what else holds it in place.