Why do my hazard lights come on by themselves on a 2007 Buick Lucerne?
Probably a faulty hazard light switch.
I hate to tell you, but you need to remove the bumper. Awful, awful vehicle the Lucerne is.They should have named it Lucifer. Google and you will find diagrams, etc. to help you out. Sell it soon. Save you sanity. Try this: http://www.carcarekiosk.com/video/2006_Buick_Lucerne_CXS_4.6L_V8/lights/headlight best video I've seen so far on this, no bumper removal required.
More detail: the turn signals slowed down gradually and then stopped working. All lights still flashed when hazard lights switch was activated. The bulbs and fuses are all okay, and I have replaced the hazard flasher (which I think is a combo hazard/turn signal unit). Can't see any other flasher unit under the panel, don't know what else to try. Any ideas?