2001 Chevy Tracker 6 cyl Four Wheel Drive Automatic My 4 wheel drive stop working on my 2001 ZR2 chevrolet Tracker. It has a shifter on the floor and when it is put into 4 hi or 4 lo. the vehicle does not change from two wheel drive into 4. The 4x4 Dash light indicator stop coming on. What should I check? I lost 4x4 traction when driving in icy conditions.
It may be the sensor if it has one or it may be the unit it self
Testimonial: "I found the problem, it was a broken red wire at the Electrical Connector. Under the front Bumper right side there is an air pump with two hoses and three wires. I cut of the connector and rewired each wire without the connector directly. Now the FOUR WHEEL DRIVE Dash light comes on again and the four wheel drive is engaging."
SOURCE: 1997 chevy Blazer ZR2 4x4 not engaging
Fab only gave part of an answer. Check the vacuum lines on the driverside firewall. Also check your heater/AC unit make sure the air deflector will change from defrost to vent. If it stays on defrost no matter where you put the knob then you have a disconnected or leaking vacuum line to the dash. If that works and you don't see any open hoses then remove the battery and battery tray. You'll find the actuator there. Remove the vaccum line that goes to it, connect the battery or jumper cables so that you can start the engine. Put it in 4HI and feel for a vacuum at the line. If you do then put it on the actuator and see if it pulls on the cable. If there is no vacuum at that line then the switch at the transfer is bad and isn't sending vacuum to the actuator. If you do have vacuum and the cable didn't pull then change the actuator.
SOURCE: 1994 chevy s10 blazer 4x4 push button type
small sylinoid on the top of the transfer case needs replaced. easy to do. it has three vacumelines going to it just trun out and replace like a bolt.
SOURCE: 1998 Chevy Blazer 4x4, $ wheel drive won't work (both 4hi & 4lo )
Reset the computer by disconnecting the battery. This should solve this. nutetral is for the four lo only to engage.
Mike
SOURCE: Where can I find a free owners manual or a free
Go to this site, you will have to sign in and enter your car info, and you should be able to download the manual for free , Let me know if you have any trouble getting the info. Curt
http://www.gm.com/gmownercenter/chevy/
SOURCE: Our Chevy S-10 ZR2 won't go into 4 wheel drive
under battery is a vacum operated actuator that pulls your 4 wheel drive in to front axle.Make sure it has vacum going to it .Sometimes the actuator will get a hole in the rubber housing and 4 wheel will not engage.You could also check your vacum lines going to a canister on drivers side fender as sometimes the will come un-pluged and your actuator under battery will get novacum to it.If not it could be your actuator motor which is on the transfer case and is electric controlled and expencive300-400 dollars.Also could be a vacum line
Automatic does not change from two wheel drive into 4. The 4x4 Dash light indicator stop coming on. What should I check?
in icy conditions.
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