99 s-10

my GF lives about 50 miles away - she told me that her right front blinker strted blinking really fast and she replaced the rear bulb as it was not working, (Ifigured this would fix it) but it still does the same thing…any suggestions ?

The turn signal flasher may be bad. They’re super cheap to replace; try it and see.

They blink fast when there is a dead short in the wiring… Trace the wiring for the RR bulb. Especially any trailer hitch wiring…