Timing belt intervals for Saturn

When should I change my timing belt I have beneral motors car. I have a saturn. Saturn timing belt interval.
GM timing belt intervals

General Motors & Saturn
Engine Recommended Interval
1.0L*
(28)

1.3L*
(28)

1.4L
(1)

1.5L*
60,000 Miles.

1.6L* (2004-07 Aveo)
Inspect Every 30,000 Miles; Replace Every 60,000 Miles

1.6L* (2008 Aveo)
Replace Every 60,000 Miles

1.6L (Except Aveo & Tracker)
Replace Every 60,000 Miles

1.6L* (Tracker)
Replace Every 60,000 Miles: Inspect Every 90,000 Miles Thereafter

1.8L* Diesel
(1)

1.8L Gasoline
(1)

2.0L
(1)

2.2L* Diesel
60,000 Miles.

2.3L
(1)

3.0L* (Catera)
(29)

3.0L* (Saturn)
100,000 Miles.

3.2L*(Cadillac CTS)
Replace Every 96 Months or 100,000 Miles

3.4L
(50)

3.5L (Saturn Vue)
(6)

* - Interference engine.

(1) - Manufacturer does not recommend a specific maintenance interval.

(6) - Normal Service Every 100,000 Miles; Severe Service Every 50,000 Miles.

(28) - Inspect at 60,000 mile intervals. Replace every 100,000 miles if not previously changed.

(29) -Under normal operating conditions replace every 100,000 miles. If driven without engine coolant heater & under ambient temperatures of -20°F or less, then inspect at 15,000 mile intervals & replace every 60,000 miles. Use Tech II scan tool or equivalent to reset cold start counter.

(50) -Inspect at 30,000 mile intervals, replace at 60,000 mile intervals.