Pontiac 1997 Grand Prix Owner's Manual page 376

I I
Long TriplHighway lwaintenanee Schedule
50,000 Miles (83 000 km)
Change automatic transaxle fluid and filter
if the vehicle is mainly driven under one or
more of these conditions:
-
In
heavy city traffic where the outside
temperature regularly reaches 98 * F
(32°C) or higher.
-
In hilly or mountainous terrain.
-
When doing frequent trailer towing.
- Uses such as found in taxi, police or
delivery service.
If
you do not use your vehicle under any o f
these conditions, the fluid and filter do not
require changing.
BATE ACTUAL MILEAGE SERVICED BY:
-
7-32