4 Wheel Drive/SUVs: 99 gmc jimmy 4 wd switch

Question
Hi, I have tried another switch from a dealership and it did not help.  Is there any fuses or relays under the hood?

Answer
Randy,

I would suggest that you purchase a repair manual with wiring diagrams at your local parts store,  Haynes, or Chiltons are the most common.  They are fairly inexpensive, and great when it comes to trouble shooting.  They have a trouble shooting section, along with pictures and diagrams.

Carl