A/C condenser fan
 

2000 K3500, 7.4L.
The A/C condenser fan is not coming on when the A/C is on.
On older models, the fan runs whenever the A/C is on.
I've read some post that this model year is different.
The fan will only come on when a switch on the compressor senses high pressure.
Anyone know if this is true?????
I've powered the fan motor, and it is fine.
A/C is working fine.