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Check the vacuum line to the front differential.
The vacuum actuator is either in the fender or under the battery. The actually diff actuator is on the back/bottom of the front diff. Mine (2000 blazer) is under the battery. It sucks to get to. If you check the actuator and it doesn't move at all, check the vacuum, if it's not getting vacuum, check the switch on the top driver's side of the transfer case. It sends vacuum to the actuator. It has three vacuum hoses coming off of it. It costs fifteen dollars at autozone and usually greatly improves the performance of the acuator.
how to replace actuator on a 2000 malibu
Tracker - 2000 was released on: USA: 15 November 2000
It sounds like you need a new actuator. there is two things that lock in when you use 4x4. one is the transfer case and the other is the front diff. the front diff is turned on by an actuator. if you have a problem with the actuator the front axles wont lock in. even though the transfer case is engaged.
Mantis Bug Tracker was created in 2000.
where its located the oil gage in a 2000 Chevy tracker mortor 2.0
replace temperature door actuator.
repair timing chain on 2000 chevy tracker
first you need to check your brakes 2000 vehicles dont have front drums, they have disk brakes
less than 2000
Behind the dashboard