WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Capacities - Approximate Fluid
Lubricant
Specification
Metric
English
Use automatic transmission fluid-DEXRON®-III, GM P/N 12346143 (Canadian P/N 10952622)