IFS 4x4s have a diff actuator in the front diff, GM had some problems with it

Answered by 2CarPros Jack (expert)
12,033 answers provided

ck for vacuum at the servo.if u push the servo in does the front hubs lock?

Answered by cadieman (expert)
2,867 answers provided

Read mileage wrong its 73500

Answered by Guzz747
2 questions asked

have u checked the servo yet

Answered by cadieman (expert)
2,867 answers provided

Please help me someone is this an expensive fix

Answered by James Humphreys
2 questions asked

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

Answered by cadieman (expert)
2,867 answers provided