Question about 1999 GMC Suburban

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Transfer case in 99 GMC Suburban

I have an auto 4wd push button transfer case. I took the transmission out of it last winter in a snow storm and since then the 4wd hasn't worked and the "service 4wd" light is on in the instrument cluster. I used to be able to try to engage it but it would only make a buzzing noise and revert back to 2wd mode. Now the lights on the switch are all off and it makes no noise at all. Any ideas would be great.

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  • Yvonne Morin Dec 24, 2008

    the push button for the 2HI does not stay on. Any ideas

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  • 33 Answers

Hello
I had this with a C3500 4x4 it was the wiring contection at the transmission please test all these problems as ths may be a cheap fix.

Hope this helps
www.limotec.co.uk
Regards Paul

Posted on Jan 11, 2009

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