1991 GMC Jimmy my 4x4 wont work

1991 GMC JIMMY
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STEWARTSUPERFLY
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1991 GMC Jimmy V6 Four Wheel Drive Automatic 143,00 miles
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ihave have a 1991 gmc s15 jimmy and my four wheel drive wont work.. i shift it into four high my transfer case kicks in but my front wheels wont pull. thanks!
Dec 1, 2007 at 5:45 PM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
Sounds like you might have to check the hubs...


https://images.2carpros.com/forum/automotive_pictures/62217_Manual_1.jpg


https://images.2carpros.com/forum/automotive_pictures/62217_Automatic_1.jpg


https://images.2carpros.com/forum/automotive_pictures/62217_Instructions_4.jpg


https://images.2carpros.com/forum/automotive_pictures/62217_AutomaticRR2_1.jpg


https://images.2carpros.com/forum/automotive_pictures/62217_AutomaticRR3_1.jpg


https://images.2carpros.com/forum/automotive_pictures/62217_AutomaticRR_1.jpg

Dec 1, 2007 at 10:14 PM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
Also check the front diff actuator. Had big troubles with those. Some are cable operated and mounted under the battery, others electric and mounted on the diff.Cables and vacuum actuators failed on the 1st style and the electric ones come with a kit to wire in a heater to keep it from freezing, but they also failed for other reasons than freezing
Dec 2, 2007 at 12:05 AM
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