LS1GMCTruck

iTrader: (2)

What were the stock 2001 LS1 dual electric fan activation temperatures? Thanks, Gar

v8mazda351

I believe low speed is 226. I can't remember what high speed is off the top of my head

99c5vert

I believe they were 226 and 236, but I'm not sure about the high one

Rodder

iTrader: (2)

here are the stock settings from my '99 PCM:

Fan 1 On Temp 226F
Fan 1 Off Temp 219F
Fan 1 Enable Speed 30 mph (for A/C)
Fan 1 Disable Speed 35 mph (for A/C)
Fan 2 On Temp 234F
Fan 2 Off Temp 227
Ignition Off Disable Temp 2 235F
Ignition Off Run Time 150 sec

Eskimo

iTrader: (9)

Can that be adjusted when you get your PCM flashed? That's just too hot for my tastes..

On my old motor, I had set the low speed at 200, the high at 215..

Rodder

iTrader: (2)

Yes, it's all adjustable with any decent tuning software.

Eskimo

iTrader: (9)

Thanks... Another thing to put on the list for my harness/PCM guy..