GMC SIERRA 2002 Manual page 468

Scheduled Maintenance
37,500 Miles (62 500 km)
j
Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
j
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
45,000 Miles (75 000 km)
j
If Equipped: Replace passenger compartment air filter. If you drive regularly
under dusty conditions, the filter may require replacement more often.
j
Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
j
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
DATE
ACTUAL
SERVICED BY:
MILEAGE
DATE
ACTUAL
SERVICED BY:
MILEAGE
7-11