GMC 2010 Sierra Owner's Manual page 610

Scheduled Maintenance (cont'd)
Service Maintenance Maintenance
Steering and suspension inspection.
Chassis components lubrication.
Engine cooling system inspection.
Windshield wiper blades inspection.
Body components lubrication.
Restraint system components check.
Automatic transmission fluid level check.
Four wheel drive only: Transfer case fluid level check.
Engine air cleaner filter inspection (vehicles not driven in dusty conditions).
Shields inspection, vehicles with diesel engine or with GVWR above 4 536 kg
(10,000 lbs) only.
7-10