(bÄsh) v. bashed, bashÂ·ing, bashÂ·es. v.tr. 1. To strike with a heavy, crushing blow: The thug bashed the hood of the car with a sledgehammer. 2. To beat or assault severely: The police arrested the men who bashed an immigrant in the park.
What is this? In power rack-and-pinion steering, fluid pressurized by the pump pushes on either side of a piston mounted to the rack, helping you turn the wheels. Simply put, power-steering fluid is the hydraulic fluid that transmits the power in power steering. Servicing it involves draining or flushing out your car's old power-steering fluid and then adding fresh power steering fluid. Absolutely. The fluid is the cheapest component of your power-steering system.
GM now recommends that power steering fluid should be changed at 50,000 miles and continue at that interval. Just like engine oil, power steering fluid will eventually break down and carry suspended contaminants from component wear and breakdown.