2014 Chevrolet Express 3500 Passenger Owner Manual - Page 340

10-90 Vehicle Care { Caution To avoid surface damage, do not use strong soaps, chemicals, abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated wheels. Use only approved cleaners. Also, never drive a vehicle with aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes. Damage could occur and the repairs would not be covered by the vehicle warranty. Inspect power steering for proper hook-up, binding, leaks, cracks, chafing, etc. Visually check constant velocity joint boots and axle seals for leaks. 1500 Series vehicles, at least every other oil change lubricate the outer tie rod ends. 2500/3500 Series vehicles, at least every other engine oil change lubricate the upper and lower control arm ball joints. Control arm ball joints on 1500 series vehicles are maintenance-free. 2500/3500 Series vehicles equipped with steering linkage, at least every other engine oil change lubricate the tie rod ball joints, idler arm pivot shaft bearings, idler arm socket, and pitman arm socket. { Caution Lubrication of applicable Steering/ Suspension points should not be done unless temperature is -12°C (10°F) or higher, or damage could result. Body Component Lubrication Lubricate all key lock cylinders, hood hinges, liftgate hinges, and the fuel door hinge unless the components are plastic. Applying silicone grease on weatherstrips with a clean cloth will make them last longer, seal better, and not stick or squeak. Steering, Suspension, and Chassis Components Visually inspect steering, suspension, and chassis components for damaged, loose, or missing parts or signs of wear at least once a year. Underbody Maintenance At least twice a year, Spring and Fall, use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop.