2011 Chevrolet Express 1500 Cargo Owner's Manual - Page 378

11-4 . Service and Maintenance . Engine air cleaner filter inspection. See Engine Air Cleaner/Filter on page 10‑18. Brake system inspection (or every 12 months, whichever occurs first). Steering and suspension inspection. Visual inspection for damaged, loose, or missing parts or signs of wear. Lubricate the front suspension, kingpin bushings, steering linkage, and rear driveline center splines. . . . Body hinges and latches, key lock cylinders, folding seat hardware, and rear compartment hinges, linkage, and handle pivot points lubrication. See Recommended Fluids and Lubricants on page 11‑8. More frequent lubrication may be required when the vehicle is exposed to a corrosive environment. Applying silicone grease on weatherstrips with a clean cloth makes them last longer, seal better, and not stick or squeak. Restraint system component check. See Safety System Check on page 3‑23. . Fuel system inspection for damage or leaks. Exhaust system and nearby heat shields inspection for loose or damaged components. Vehicles with diesel engine or GVWR above 4 536 kg (10,000 lbs) only: Shields inspection for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable to vehicles sold in the United States and recommended for vehicles sold in Canada. . . .