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#1
05-11-2007, 02:23 PM
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Swithes from 2 wheel drive to 4 wheel drive
 The indicator lights on the dash switch from 2 while drive to 4X4 automatic all by it'self. The mechanic is having trouble finding the problem. It doesn't actually switch but the lights do and once in a while the service 4 wheel comes on. Any ideas how we ca solve this and fix the problem?
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#2
05-11-2007, 06:27 PM
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Re: Swithes from 2 wheel drive to 4 wheel drive
Welcome to AF.
What year and what transfer case? Need the no off of tag on rear of transfer case. Does the shift buttons on dash have a auto button or just 2 an 4W and low?
__________________
Remember proper testing gives us the answer to many problems. MT
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#3
05-12-2007, 03:35 PM
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Re: Swithes from 2 wheel drive to 4 wheel drive
It is a 1999 Chevy blazer. I don't know the number off the transfer case. The Blazer is at the Mechanic now. They can't seem to find the problem.
 It does have a 4x4 auto button as well as 2hi, neutral, 4hi and 4 low. My Mechanic only uses GM parts, he's a former mechanic at a local dealer.
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#4
05-12-2007, 07:04 PM
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Re: Swithes from 2 wheel drive to 4 wheel drive
If the auto button you have a 236 transfer case.
With a Transfer case capable scanner there is a lot of function test and info in the transfer case module. Even a light turn and off test for the switch. A good time to run the scanner on it is when it does it. Also a good time to service it with the new type GM blue transfer case fluid. Let us know how it goes.
__________________
Remember proper testing gives us the answer to many problems. MT
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