2004 chevrolet tracker LT will not engage 4wd and the light will not come on indecating 4wd is engage

Question edited for clarity.
Question moved to sub category.

You order them to the vehicle, not by size. The three belts are here with the OEM Parts numbers. Parts suppliers have a book with all the makes, models and years, and that book tells them the length, width and form, (ribbed or plain).
https://www.partsgeek.com/catalog/2004/chevrolet/tracker/drive_belts/accessory_drive_belt.html

You can also pick them up from Walmart, or eBay.

https://www.google.com/search?q=2004+Chevy+Tracker+LT+2.5L+V6%2C+serpentine+belt+size

..

Hi,
Please Google your issue for specifics, but it appears the 4x4 Actuator and/or Pump may be worn out on your Tracker. You may want to look into installing manual hubs on the front axles to bypass the auto-locking hubs, if so equipped.

GL,
TD

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Check the vacuum switch under the hood in the center of the firewall...follow vac diag

alternaitor going bad

I had this problem with my 99 Ford. I replace the two electric over vacuum switches on the passenger firewall.

turn the 4wd off if off you neede to get a AWD switch put on the side of trans.

On the front differential there is a thermal actuator. It engages your front differential. In parts catalogs they are called 4wd actuator. they are not easy to replace.

4 wheel drive does not engage on a 2004 toyota tundra

Found this repair link on fixya, it's great I just bought a manual. Try it :- Best Manuals