Question about 1994 GMC Sonoma

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94 Sonoma 4x4 won;t lock into 4WD.

My Sonoma was working fine a week ago. I needed to engage the 4Hi this week and it would not lock in. When I press the 4Hi button on the dash nothing happens in park or drive. If I select neutral it will try to shift ( 4Hi light flashes as normal ) but then goes back to 2Hi. If when in neutral I press the 4Low button it shifts fine and locks into 4Low. The Transfer case motor was replaced by a Dealer about 3 years ago so I don't think that is the problem. This problem happened all of a sudden. Any ideas on this. Thanks in advance

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  • coconutjag May 15, 2009

    08 94 sonoma 4x4 won'ty engage. the motor on tranfer case is running

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  • GMC Master
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Yea its not shifting again like before ? sounds like your transfer case solonoid has possably gone bad again .. these are a sometimes dont work item .. It is what shifts the transfer case into gear and it might be a little worn or weathered and not letting the switch kick it in gear all the way from the N position. thanks Jerry holler if you need more.

Posted on Feb 05, 2009

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