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General Motors has used hydraulic power steering technology on many classic models, such as Chevrolet, Cadillac and other brands, but General Motors has gradually applied electric power steering technology to many of its models since around 2010.

The electric power steering system has: Electrical failure Motor failure Electronic control unit (ECU) failure Sensor failure Mechanical failure Environmental factors Improper maintenance

When the driver turns the steering wheel, the steering shaft is connected to the rack through the gear. The turning force applied by the driver is transmitted to the rack through the gear, which then pushes the rack to move along the axial direction. The movement of the rack drives the steering connection components, which in turn causes the wheels to turn.

When the system fails, steering wheel operation becomes extremely difficult, especially when driving at low speeds or parking. This is because without the hydraulic power assistance, the driver needs to rely entirely on their own strength to turn the steering wheel, and without the help of the hydraulic system, the amount of force required to turn the steering wheel may increase significantly.

Amber or light yellow power steering fluid is usually a mineral oil-based power steering fluid. This fluid is usually a clear light yellow or light amber color when new, and it may gradually darken to a darker amber or brown color over time.

Although hydraulic power steering racks were once the mainstream choice for automotive steering systems, with the advancement of electronic technology, other types of steering systems have gradually occupied an important position in the market. However, this does not mean that hydraulic power steering racks have been completely eliminated.

Improved energy efficiency A significant advantage of the electric power steering rack is its higher energy efficiency. Unlike hydraulic systems, the electric power steering system only activates the electric motor to provide assistance when steering assistance is needed.

The launch of the power steering system is an important part of its innovation history. General Motors officially launched the power steering system in 1951, and it was first used in some models of the Cadillac brand.

The power steering rack is usually equipped with seals at both ends to prevent fluid leakage. However, as the vehicle is used for a longer time, the seals will lose their sealing ability due to wear, thermal expansion and contraction, or material aging. Once the seals are damaged, the fluid will leak out from both sides of the steering rack.

Positive locking means that in a rack and pinion steering system, a specially designed locking device is used to automatically lock or limit the steering angle under certain conditions to prevent the vehicle from oversteering or steering out of control.