pushbutton 4x4

Before I knew any better, I purchased a used pushbutton 4x4, 2001 GMC Yukon.
I now frequently get a "SERVICE 4WD" message on the dash. What should I do
now? The thing clears up when the vehicle is restarted. The dealer doesn't
read a code and the problem will not repeat while it is in the shop. Should I
purchase a OBD scanner and leave it connected so I can see if the code shows
up while driving and I get the message? What is typically the failure mode of
these systems? When this occurrs, I cannot shift the 4x4 system. I'm afraid
I'll get locked up in 4x4Lo at some point.

On Wed, 20 Sep 2006 18:11:54 GMT, "clwomble" <u26911@uwe> found these unused
words floating about:
[color=blue]
>Before I knew any better, I purchased a used pushbutton 4x4, 2001 GMC Yukon.
>I now frequently get a "SERVICE 4WD" message on the dash. What should I do
>now? The thing clears up when the vehicle is restarted. The dealer doesn't
>read a code and the problem will not repeat while it is in the shop. Should I
>purchase a OBD scanner and leave it connected so I can see if the code shows
>up while driving and I get the message? What is typically the failure mode of
>these systems? When this occurrs, I cannot shift the 4x4 system. I'm afraid
>I'll get locked up in 4x4Lo at some point.[/color]


First ... I'd ask in a Chebbie or Gmuck group !

Whoops, I'll ask there.

Sir F. A. Rien wrote:[color=blue][color=green]
>>Before I knew any better, I purchased a used pushbutton 4x4, 2001 GMC Yukon.
>>I now frequently get a "SERVICE 4WD" message on the dash. What should I do[/color]
>[quoted text clipped - 4 lines][color=green]
>>these systems? When this occurrs, I cannot shift the 4x4 system. I'm afraid
>>I'll get locked up in 4x4Lo at some point.[/color]
>
>First ... I'd ask in a Chebbie or Gmuck group ![/color]

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