I was wondering if i replace the 4wd dash switch on my 2001 blazer with one that has the option of the auto 4wd would it be compatible becaus eif not then I wont switch it

thanks,
Jeff

 

No. There is A LOT more that goes into the Auto4wd than the switch in the dash. The switches themselves are very much different as well. The standard 3-button switch has true switching with direct connection of conductors while the 4-button Auto4wd switch connects through resistors and the TCCM interprets the difference in output to determine which button was pressed.

 

thanks for the help