GMC 2003 Sonoma Owner's Manual page 379

0
Change automatic transmission 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 90°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 of these
conditions, change the fluid and filter every 50,000 miles
(83 000
km).
0 Inspect engine air cleaner filter if you are driving in
dusty conditions. Replace filter if necessary. An
Emission Control Service. (See footnote f.)
48,000 Miles (80 000 km)
0
0
0
5
Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
Lubricate chassis components (or every 3 months,
whichever occurs first). (See footnote #.)
Check readfront axle fluid level and add fluid as
needed. Check constant velocity joints and axle seals
for leaking. (See footnote **.)
Rotate tires. See Tire lnspection and Rotation on
page 5-66 for proper rotation pattern and additional
information. (See footnote
+.)
50,000 Miles (83 000 km)
5
If you haven't used your vehicle under severe service
conditions listed previously and, therefore, haven't
changed your automatic transmission fluid, change
both the fluid and filter.
Manual transmission fluid doesn't require change.
51,000 Miles (85 000 km)
t l Change engine oil and filter (or every 3 months,
0 Lubricate chassis components (or every 3 months,
5 Check readfront axle fluid level and add fluid as
whichever occurs first). An Emission Control Service.
whichever occurs first). (See footnote #,)
needed. Check constant velocity joints and axle seals
for leaking. (See footnote **-)
54,000 Miles (90 000 km)
U Change engine oil and filter (or every 3 months,
0
Lubricate chassis components (or every 3 months,
0 Check readfront axle fluid level and add fluid as
whichever occurs first). An Emission Control Service.
whichever occurs first). (See footnote #.)
needed. Check constant velocity joints and axle seals
for leaking. (See footnote
**.)
page 5-66 for proper rotation pattern and additional
information. (See footnote
+.)
0 Rotate tires. See Tire lnspection and Rotation on
6-1 2