GMC Vehicle Sierra 3500 HD

Tires should be rotated according to the interval listed in the maintenance schedule.

Tires are rotated to achieve a more uniform wear for all tires. The first rotation is the most important.

Anytime unusual wear is noticed, rotate the tires as soon as possible, check for proper tire inflation pressure, and check for damaged tires or wheels.

If the full-size spare tire is part of the tire rotation, make sure the tire rotated into the spare position is stored securely. Push, pull, and then try to rotate or turn the tire. If it moves, use the wheel wrench/ hoist shaft to tighten the cable.

If engine oil change is needed, change engine oil and filter, and reset oil life system.

If the CHANGE ENGINE OIL SOON message displays, have the engine oil and filter changed within the next 1 000 km/600 mi.

If driven under the best conditions, the engine oil life system may not indicate the need for vehicle service for up to a year.

The engine oil and filter must be changed at least once a year and the oil life system must be reset.

If the engine oil life system is reset accidentally, service the vehicle within 5 000 km/3,000  mi since the last service.

Reset the oil life system when the oil is changed.

Warning: This inspection requires trained personnel with PPE!

Tire inspection for signs of wear or damage

Upload a photo of the damaged tire

Sign off on the tire inspection

Tires need the correct amount of air pressure to operate effectively.

Neither tire underinflation nor overinflation is good. Underinflated tires, or tires that do not have enough air, can result in:

• Tire overloading and overheating, which could lead to a blowout

• Reduced fuel economy for internal combustion engine vehicles

• Reduced range for electric vehicles

Overinflated tires, or tires that have too much air, can result in:

Visually inspect steering, suspension, and chassis components for damaged, loose, or missing parts or signs of wear at least once a year.

Inspect power steering for proper attachment, connections, binding, cracks, chafing, etc.

Visually check constant velocity joint boots and axle seals for leaks.

2500/3500 Series vehicles, at least every engine oil change lubricate the upper and lower control arm ball joints.

2500/3500 Series vehicles equipped with steering linkage, at least every engine oil change lubricate the tie rod ball joints, idler arm pivot shaft bearings, idler arm socket, and pitman arm socket.

Lubrication of applicable suspension points should not be done unless the temperature is −12 °C (10 °F) or higher, or damage could result.