Whats the proper operation of cooling fans on a 98 grand prix 3.8L

My Ac is no longer working . The compressor died and a couple of the lines have holes in them. (Cant seem to fine the lines). According to my scanner the temp is about 12* higher than the gauge in the car is reading. When the cars gauge is reading the 210* the scanner says its about 220* which has me concerned. In the 20 years Ive had this car I dont remember it ever reading close to 210* on the gauge. I drive 60 miles a day for work and I dont want the car to over heat. Ive gotten one fan to work on high speed manually triggering it but the passenger side fan doesnt work at speed just the lower speed. Not sure if its supposed to work at high speed. Im thinking it should. Im figuring I can wire up a switch to control the high speed fans just need to know if both fans have high and low or just one.

Both have been replaced. Along with the radiator and water pump .

Recommend ‘professional’ scan test. Pro quality scanner can run functional test on cooling fans.