Back Up Lights problems of the 2009 Buick Lacrosse

Driving home at 11pm in the dark and lost headlights completely first time in sept 2014 then again in October 2014 and most recently 3 times in may 2015 all 3 times I was driving 55 mph in the dark and last one was in pouring rain. . Luckily there were street lights each time . . I pulled over quickly ,blindly as the dash lights went out, too, so I couldn't see where the 4 way flashers were to turn them on . . I got out and looked got back in shut car off started it back up and the headlights came back on . . The most recent time and the first time I had no high beams either . . Literally no lights for 30 seconds to 3 minutes . . Had there been traffic I may have been in an accident or if not for streetlight in pouring rain I would have ended up in a ditch or worse . . There is a recall on lowbeams but dealer wouldn't fix it because gm is dragging their feet about the problem. . So I took it on my own to order a relay replacement part online headlight module today to see if that fixes the problem until gm decides to issue the recall guidelines to the dealers . . . . . I don't understand what they are waiting for . . This is a very scary situation I don't drive after dark and we cant afford to buy another vehicle as my husband is retired and disabled .