MY 2006 GMC ENVOY WILL NOT SWITCH INTO ...

2006 GMC Envoy

Tiny

Anonymous

December, 23, 2012 AT 5:02 PM

My 2006 GMC envoy will not switch into four-wheel-drive high. The light on the switch indicates that it's on but there's no power to the front differential When driving on ice. After switching it into four hi I don't hear a clunk. So I don't know if it's a vacuum switch or the module that's bad. Is there anyway to tell without going to a service center

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1 Answer

Tiny

hmac300

December, 23, 2012 AT 6:54 PM

Check to see if actuator is getting power on tcase, that is the bigest failure on these for that problem'

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