you should not need to change it, it is not like a belt that needs to be changed at a specific mileage, you might change it when you overhaul the engine.
repair timing chain on 2000 chevy tracker
Chain
The 1.6 liter four cylinder has a timing BELT and the 2.0 liter four cylinder has a timing CHAIN
how to install time chain cover on a1997 blazer
The 1.6 liter , 4 cylinder , has a timing BELT and the 2.0 liter , 4 cylinder has a timing CHAIN
1999 and newer Chevy trackers don't have a timing belt, they have a timing chain and i was told by my mechanic that it shouldn't need changed at any specific mileage interval.
The 2003 Chevrolet Tracker 2.0 liter 4 cylinder must have a timing CHAIN The Gates website does not list a timing belt for it
timing chain
IT DOES HAVE A TIMING CHAIN
chain
Timing Chain
Timing chain