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It is not a push button 4WD. It is a shifter on the floor. Thank You

Tiny
MIAHWICKER
  • MEMBER
  • 1995 GMC JIMMY
  • 14,700 MILES
I have a 1995 GMC Jimmy. It has 147,000 miles on it. One problem with it. It does not engage in 4 high or 4 low. Not sure what to check. Could it be that the vacuum actuator is bad? Thanks for your help!
Wednesday, December 7th, 2011 AT 10:13 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Does it have the push button 4wd?
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Wednesday, December 7th, 2011 AT 10:18 PM
Tiny
MIAHWICKER
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It is not a push button 4WD. It is a shifter on the floor. Thank You
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Wednesday, December 7th, 2011 AT 10:20 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Then you need to check for vacuum leaks to the front differential. When you shift to 4wd, vacuum is sent to the front axle to engage it.
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Thursday, December 8th, 2011 AT 3:21 AM

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