The transmission fluid capacity for a 2000 Pontiac Grand Am with a V6 engine after a pan drop and filter change is approximately
4-4.5 quarts. However, this is just an estimate. It's crucial to
check your owner's manual for the precise amount. The actual amount might vary slightly depending on the exact transmission type (there were a few used in the 2000 Grand Am V6).
Always add fluid in increments, checking the transmission fluid level with the engine running and the car at operating temperature using the dipstick (if equipped) before adding more fluid. Overfilling can be just as damaging as underfilling.
