GMC 1996 Sierra Owner's Manual page 353

Short Trip/City Maintenance Schedule
--
Gasoline Engines
96?000 Miles (160 000 km)
0
Change engine oil and filter (or every
3 months, whichever occurs first).
An Ernissiorz Control Service.
0
Lubricate chassis components; see footnote #
(or every 3 months, whichever occurs first).
0
Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
w :
DATE SERVICED B Y ACTUAL MILEAGE
99,000 Miles (165 000 km)
Change engine oil and filter (or every
3
months, whichever occurs first).
An Emission Control Service.
0
Lubricate chassis components; see footnote
#
(or every 3 months, whichever occurs first).
0
Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
w K
DATE ACTUAL MILEAGE SERVICED B Y