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Old 03-29-2015, 07:18 AM
j cAT j cAT is offline
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Re: 2005 suburban 4x4 issues

Quote:
Originally Posted by Tim W View Post
Hello,
No messages. 4 low works well. 2 high works well. Will not go into 4H and 4A.
When in 4 low and switch to 4H it will go into 4A and work. I have replaced dash switch and actuator. Did not help.Any help would be great.
Thank You
Tim
surprised no 4wd error message.

improper switching is the encoder not the actuator ...
the reason these do cause problems is , the fluid need be changed every 40K miles. the trac II transfer case fluid must be a nice clean blue color .

never use 4wd in any position on dry solid pavement. avoid using locked 4wd. use auto 4wd as it puts less stress on the drive train.
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