Service 4wd indicator

[Bobielon]

Hey guys, new to the site here. Eager to get to know you all and the truck better.

Recently purchased a 03 Yukon 5.3 SLT 4x4. 140k on it. Bought it from the original owner with all of the dealer service history. Bonus.

Well the SERVICE 4WD light has been coming off and on the past few days.

Any ideas? Common causes of this?

Is this something I can have autozone scan and fix myself? (I am somewhat capable)

Thanks!

[Electrichorseman]

Bobielon,

This is a very popular question. Here's a link to another post with an answer to your question.

http://www.tahoeyukonforum.com/forum/showthread.php?t=23246&highlight=service+4wd