I have a 98 Blazer with a turn signal flasher problem. The flasher
will continue to cycle generating a clicking sound after the
multifunction switch returns to center. The lamps don't flash. Only
the flasher unit continues to make a noise. This failure happens
erraticly. It will usually start after a turn has completed. It will
stop for a while and then just start up. Accelerations and
decelerations seems to make it start up again.
Jiggling the multifunction switch may have some effect on the problem.
It is hard to tell for sure since it is erratic. I looked up the
circuit schematics in the Helm manual. There is nothing there that
seems to indicate that the multifunction switch is the culprit. If it
was bad, I would expect to see a lamp flash somewhere. (I need to
double check this with someone helping me. With it being erratic, I
may have just missed an outside flashing lamp. I am sure that the IP
indicators don't flash.)
I also seem to be confused about how the flasher works. From the
schematics, I'd swear that in normal operation it always has power. Is
it only supposed to operate when a load is hooked up to it? If so,
then maybe there is a short somewhere. Then again, maybe the flasher
unit is just bad.
Has anyone run into this? Does anyone know how the modern flasher