Drivers side tailight
You need a test light to see if there is power in the socket. Try moving the bulb around in the socket to make contact. Still no good then just have to start tracing back with the test light until you find where the power ends.
Check all the other bulbs too all for corners.
Looking for a Used Liberty in your area?
CarGurus has 7,261 nationwide Liberty listings starting at $1,400.
Search Jeep Liberty Questions
Jeep Liberty Experts
Related Models For Sale
Used Cars For Sale