Service Intervals: Transmission
WARNING: This page is about a different car, the 2001 GMC Safari, 2001 Chevrolet Astro, 2000 GMC Safari, and 2000 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
Check transmission fluid level at each engine oil change. Under normal driving conditions, change transmission fluid and filter every 50,000 miles. Under severe driving conditions, change transmission fluid and filter every 15,000 miles.