97 Grand Voyager A/C, Fan and Heater works on high, not on low?

I have a '97 Grand Voyager The A/C, Vent and Heater both
blow when switched to high but not at low or any middle fan setting.

The cool and heat work just fine.

I read of a set a few years back on holding down a few buttons on the
panel to "reset" it?

Kbaker

 

Blower motor resistor, passenger side firewall next to wheel well

 

Thanks
Do you know what this item looks like?
I looked all over the wheel well. On my 1997 I see the brake fluid
reservoir, a few connectors and lines for air conditioning.

Is it big, small ? Easy to see and get to or not easy?

Kbaker

 

On my 86 it was on the firewall on the passenger side it was abuut 2 inches
by 4 inches and set in a hole in the firewall with a wire connector sticking
out the back

 

Thanks Jack, I did see that connection but did not know that it was
the Blower motor resistor.
To do this I must:
1)un-plug the wire harness
2)pull the unit out of the firewall? (what's on the other side?)
3)insert the new part into the firewall
4)re-plug the wire harness.

Is this easier or harder than it seems to be?

Kbaker

 

Access can be a bit tricky. Often the connector is corroded onto the
resistor block connection and very difficult to get off. You might just try
to release the resistor block from the firewall, with the wiring still
connected. Undo a couple of clamps to get the connector and block out where
you can work on it better. When I bought my new resistor, it came with a new
wiring connector and 8 inches or so of wire tail to splice into the existing
engine wiring harness. When you get it out, it has only the resistor
windings on the other side.
It is as easy as you say for the steps, but due to access and stuck
connector, you may find it not so quick. Make sure to use plenty of
di-electric on the new connection to prevent future corroding and sticking
if the connector.