Power Rack & Pinion - Cars - Except Prizm & Saturn
BODY CODE IDENTIFICATION
DESCRIPTION & OPERATION
RACK & PINION ASSEMBLY
Pump pressurizes fluid and sends it through the pump's flow control valve to the pinion and valve
on the rack and pinion assembly. See Fig. 1 . Pinion and valve direct fluid to either side of the
piston and rack, depending on turning direction of steering wheel. Piston and rack converts
hydraulic pressure into linear force, reducing turning effort.
POWER STEERING PUMP
Two types of power steering pumps are used, CB series or TC series. These pumps are constant
displacement vane-type pumps. See Fig. 6 and Fig. 7 . When pressure exceeds set limits, a flow
control pressure relief valve opens, allowing fluid to return to the inlet side of the pump. Some
pump applications have remote fluid reservoirs or reservoir attached to pump assembly, to enable
Camaro & Firebird
Bonneville & LeSabre
Cavalier & Sunfire
DeVille & Seville
Alero, Grand Am & Malibu
Century, Grand Prix, Impala, Intrigue, Lumina, Monte Carlo
Some vehicles are equipped with Variable Effort Steering (VES)
system, identified by a solenoid on the power steering pump at the
pressure line outlet. See appropriate ELECTRONIC article.
2001 Chevrolet Lumina
2000-01 STEERING Power Rack & Pinion - Cars - Except Prizm & Saturn
Friday, March 27, 2009 11:35:13 AM
© 2005 Mitchell Repair Information Company, LLC.
different pump mounting locations. Some models have a reverse rotation pump, depending upon
location and belt routing.
Use GM Power Steering Fluid (1050017). Failure to use proper fluid will cause hose and seal
damage, resulting in fluid leaks and damage to pump and/or rack and pinion assembly.
POWER STEERING FLUID CAPACITY
FLUID LEVEL CHECK
Fluid level is indicated by marks on reservoir or dipstick. Ensure fluid leve