1993 GMC Sonoma Owner's Manual - Page 218
1993 GMC Sonoma Manual
Page 218 highlights
Hazard Warning Flashers AM505003 Your hazardwarningflashersletyouwarnothers.Theyalsoletpoliceknow youhaveaproblem. Your frontandrearturnsignallightswillflash off. Buttheywon'tflashifyou'rebraking. on and Pressthebuttonintomakeyourfrontandrearturnsignallightsflashon and off. Your hazardwarningflasherswork andeven if thekeyisn'tin. no matterwhatposition your key is in, 5-2
We apologize, but we cannot currently deliver this PDF manual by request of the manufacturer.
We apologize for any inconveniece.