does my2004 Nissan Xterra XE model 4 cylinders have a timing belt??

What is your question?

Own this Suv for 3 yrs. Service Engine soon light is on. It has 107,000 miles. Code says thermostat but I'm curious about the timing belt or is it a timing chain. Thank you for any help!!

What makes this problem better or worse?

no

How long has your 2004 Nissan Xterra had this problem?

Since January 2018