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1996 Chevy S-10 stuck in 4wheel drive, high

Tiny
AZSCHAECHNER
  • MEMBER
  • 1996 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 133,300 MILES
I checked the vacuum actuator and it seems fine and there is vacuum to it. There is a "motor engaging" noise under the truck by the transfer case, but it sounds like something is stuck(obviously).
Sunday, June 19th, 2011 AT 8:04 PM

2 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
You should check for codes
As system should store DTC and need a scanner to retrieve the codes
Most likely if I to guess an encoder motor on the transfer case
Check it when you command the switch to a different position
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Monday, June 20th, 2011 AT 10:30 AM
Tiny
NO1SBOY
  • MEMBER
  • 17 POSTS
Get the truck onto solid ground. Pavement, hard-packed dirt and back it up a good ways. 50 - 100 ft. Then try and shift out of 4Hi. From what I understand, the axles/differentials will actually 'bind up' tight enough to prevent the actuators from doing their job. This usually happens if the truck had been driven some distance on hard ground/pavement in 4Hi/4Lo.
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Monday, June 20th, 2011 AT 11:24 AM

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