1989 Chevy Truck (ck 2500)

1989 CHEVROLET TRUCK
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OMAHAN
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I have a 89 chevy truck 4x4 CK2500. When I engage the 4 weel drive the front weels will not spin. I supposed to have an automatic locking system but don`t work. Does anybody out there knows how to fix this problem? Should I install the mechanical hubs on it?
Jan 11, 2006 at 8:54 AM
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2CARPRO JACK
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IFS 4x4s have a diff actuator in the front diff, GM had some problems with it
Jan 11, 2006 at 3:19 PM
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CADIEMAN
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ck for vacuum at the servo.if u push the servo in does the front hubs lock?
May 18, 2012 at 7:43 AM
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GUZZ747
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Read mileage wrong its 73500
Jun 3, 2012 at 9:13 PM
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CADIEMAN
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have u checked the servo yet
Jun 3, 2012 at 10:54 PM
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JAMES HUMPHREYS
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Please help me someone is this an expensive fix
Jul 13, 2012 at 12:28 AM
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CADIEMAN
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when u shift to 4wd there is a vac. servo under the hood.this has a cable that locks the front hubs.sometimes the little clip from the servo to the cable.the clip brakes at the servo.when you switch to 4wd the servo sucks in and with that broken clip it doesnt pull the cable to lock the front hubs.just go to the cable,. pull it to lock the hubs use vice grips to hold the
cable.then test the 4wd.if your truck doesnt have this sys.mail 2CarPros Jack.my sons had a 84 chevy it had this type sys.i cant see them redisigning a whole different sys.gl
Aug 8, 2012 at 4:24 AM