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service 4x4 light comes on

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Sep 26, 2012, 11:08 AM

Post #1 of 2 (1192 views)
service 4x4 light comes on Sign In

2002 gmc 2500 4x4 6.0 liter the light doesnt come on until I drive above 80 kilometer an hour. The truck goes into 4 wheel drive
when the light isn't lit up but when the light comes on it doesn't go in to 4 wheel drive.

Ultimate Carjunky / Moderator
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Sep 26, 2012, 11:41 AM

Post #2 of 2 (1173 views)
Re: service 4x4 light comes on Sign In

Need to take it to a shop that has a scanner that can access the TCCM to see what trouble code(s) it is storing.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

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