Re: Right side signal lights flash fast
Apologies for being repetitive - have you checked both front and rear turn signals? Do your side view mirrors have turn signals on them and if so are they working?
Does the car have OEM rated bulbs in it - ie no LED or incorrect wattage bulbs substituted? Any recent electrical work done (stereo, alarm system etc)?
Another thing it could be is the multi function switch itself. On a 2000 Alero I previously owned the turn signals would go crazy like this and it was a known issue with the switch.
2008 Outlook XR FWD 230,000km
2009 Astra XR 80,000km