2000 GMC Sierra

IF YOU RECIENTALLY REPLACED TH BULB AND IT IS NOT THE CORRECT ONE IT WILL FLASH FAST. SIMPLE CHEAP REPLACE BULBS?
NOT SO SIMPLE CHVY AND GMC HAVE GONE TO A CIRCUT BOARD TYPE CONNECTOR ON THERE REAR TAIL LIGHTS ASSY. THEY CRACK ALL THE TIME AND GIVE MULTI PROB FORM ONE BULB NOT WORKING TO NO TAIL LIGHTS AT ALL TO YOUR FAST FLASHER PROB. HOPE THIS HELPS