GMC SIERRA 1997 Manual page 372

Short TripKity Maintenance Schedule
--
Gasoline Engines
50,000 Miles (83 000 km)
0
Change automatic transmission fluid
and filter if the vehicle's GVWR is over
8600 lbs. or if the vehicle is mainly driven
under one or more of these conditions:
-
In heavy city traffic where the outside
temperature regularly reaches 90
O
F
(32°C) or higher.
-
In hilly or mountainous terrain.
-
When doing frequent trailer towing.
- Uses such as found in taxi, police or
lf
you do not use your vehicle under any of
these conditions, the fluid and filter do not
require changing.
Manual transmission fluid doesn't
require change.
delivery service.
I
DATE
I
ACTUAL MILEAGE
I S ERVI C ED
BY:)
7-18