LS6427

iTrader: (2)

My step fathers parents...in their 90's...have a 2000 Pontiac Sunfire. I assume they are the same fan motors and selector switches as our F-Body's.

They do not have #1 or #2 fan speeds, fan does not turn on. But #3 and #4 fan speeds work fine.

What can I do for them to fix it? Does it simply need a totally new fan switch?

Thanks

slvr98camaro

iTrader: (1)

spray some wd-40 in the switch and wiggle it around a bit

i have an old car that sits 99% of the time and had a similar problem (mine only worked on high)

but that fixed my problem

Formula413

iTrader: (1)

Almost certainly the blower motor resistor. It's probably behind the glove box.

slvr98camaro

iTrader: (1)

blower motor resistor should only work on high if it is bad.

Formula413

iTrader: (1)

I think I've heard of them losing one speed at a time.