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General Motors Timing Belts

* - Interference engine.

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

(28) - On models prior to 1998, manufacturer does not recommend a specific maintenance interval. On 1998 & later models, inspect at 60,000 mile intervals & replace if needed, or replace every 100,000 miles (if not previously replaced).

(29) - Replace every 60,000 miles if driven without an engine coolant heater & under ambient temperatures of –20 degrees Fahrenheit, then inspect at 15,000 mile intervals. Use a Tech II or equivalent scan tool to reset Cold Start Counter. Replace every 100,000 miles under normal operating conditions.

(48) - On 1996 & earlier models replace every 100,000 miles. On 1997 models replace every 100,000 miles, then perform follow-up inspection 30,000 miles later. On 1998 & later models inspect at 60,000 miles, then replace at 100,000 miles it not previously replaced.

(50) - Inspect at 30,000 miles, replace at 60,000 miles, inspect again at 90,000 miles, replace again at 120,000 miles and so on.