Pontiac 1993 Trans Sport Owner's Manual page 232

3.1L V6:
Checking Air Cleaner Filter
To Check or Replace:
1. Remove the large wing nut and lift
the cover.
3.1L V6:
Replacing Air Cleaner Filter
2. Remove the air cleaner fdter.
3.
Be sure to install the air cleaner filter,
replace the cover and tighten the
wing nut securely.