I asked about this some time ago, but something new has been added in my
case, and I thought I would run it by the list one more time, as it
looks as if I need to really tear into the dash in depth.

Since I bought my van, the lower speeds of the heater fan would not
work. Worked fine on high speed, or so I thought. I never really needed
it so just didn't turn it on "HIGH" except for brief moments. I could
hear the motor trying to turn at the lower settings, but it just would
not go, so I never tried the lower settings anymore.

This last week we started getting our first measurable precipitation
since last April.Talk about a dry spell.....! Anyway, the rains have
come with a vengeance, and I have needed that fan to defrost the
windows. Plenty of heat, but no blow except on "HIGH"..

Well, today while running on "HIGH" during a pouring rain, the blower
quit cold. I turned the switch to "Off". When I got to work, I tried it
on HIGH again. Turned right on.

So, List, what am I looking at here. Switch, Relay, Motor, All of the
above? And what must I do to get at any of it. And how much of the stuff
should I replace, especially if I have to go under the dash. I
understand that the relay is inside the airbox. Is this true? Can I put
it somewhere else for future ease of maintenance. Is there anything else
under the dash that I should take a look at if I must take it out.

Any help here will be much appreciated.

BTW, my rig is an 88 GL.

Thanks,,
John Rodgers
88 GL Driver in Birmingham, AL