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

1995 GMC JIMMY
14,700 MILES
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MIAHWICKER
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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!
Dec 7, 2011 at 2:13 PM
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JACOBANDNICKOLAS
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Does it have the push button 4wd?
Dec 7, 2011 at 2:18 PM
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MIAHWICKER
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It is not a push button 4WD. It is a shifter on the floor. Thank You
Dec 7, 2011 at 2:20 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 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.
Dec 7, 2011 at 7:21 PM
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