Here is what "vzsv8" posted in a thread so credits to him:
The resistor shown in the 'How to' is for the standard air conditioner. Great write up BTW.
If you have climate control the module is a big transistor inside a similar looking heat sink. The failure mechanism is either no fan at all or full speed at all times, even with the key out of the ignition :my:
The climate control module is over $150 and the short term cure is to pull the fusable link IN FRONT of the engine fuse box, I think it's pink. Just keep pulling them out and replacing until the fan stops.
Three guesses how I found this out
if yours is a climate control model holden charges $150+ for new one, i have repaired quite a few as i can get the proper NEC amplifier that holden use from work through wes, i do swapover units if your after one.