No left turn signal, front or back and no indicator on dash. Right side and flashers work

Check if the flasher is bad. then check both bulbs.

Front right and rear right are on a different circuit than the left front an left rear. Locate the Flasher control module behind dash. With key in RUN position check for pulsing battery voltage on the Green/white wire coming out of the flasher control module electrical connector. If no battery voltage, check for battery voltage coming into the flasher from the turn signal switch on the white/red wire. Left turn input is on the white/black wire. If not battery voltage on white/red, but voltage on white/black when turning left, then the turn signal switch is bad

flasher/blinker is busted. this is located under your dash board. remove steering column cover, turn on LEFT turn signal (yes, the one that is working), then you will hear a clicking sound. locate the relay that causes the sound. there you can see 2 relays (one for LEFT, other one for RIGHT turn),replace busted one.

The signal wire going to the right front has a splice for the dash indicator, a wire branching off from the turn wire and going to the dash. It sounds like that right signal wire is broken or lost a connection before it splices off to the dash, so the problem sounds like it is under the dash, either coming out of the turn signal switch to the flasher or from the flasher to that splice. You may need a multi-meter to check voltages on that wire at various places under the dash. Ascertain which color wire you need to concentrate on. Check for voltage on it with key on and right blinker on-voltmeter will spike to battery voltage, then fall to zero as the flasher breaks voltage continuously, if checked after the flasher. If checked when leaving the turn switch, it should be a continuous signal on that wire. Think you better find a wiring diagram to find the right wire to check. Good luck.

I would try another flasher relay if it is a 4 connector type. Usually that or a bad ground connection somewhere.

renew the indicator light switch

The turn signal flasher is located under dash panel, right side of steering column.


The fuse panel is located on the left side of the instrument panel. To gain access to the panel, pivot access door downward.
The hazard flasher is located under dash panel, left side of steering column.
The turn signal flasher is located under dash panel, right side of steering column.

Hi it sounds like the multifuntion switch
never had one on a monte carlo before but lots of grand am and malibu
hope this helps

When you select left or right do any of the bulbs come on? If you select left check front and back left side if one of the bulbs did not come on the flasher will not work. Change the bulb that is out. Same with the right. If the fuse for the turn signal is good (check fuse or replace do not use visual, some appear to be good but are not).
The emergency flasher is different from the turn signal flasher. Look at manual for location of turn signal flasher. If you manually lift and lower turn signal control you may hear a clicking under the dash to locate the flasher.

the flasher is under the dash on the drivers side that is definitely a possibility but it also could be a multifunction switch