For 1990-2009 cars

# POWER STEERING SYSTEM NOISE INFORMATION

POWER STEERING SYSTEM NOISE

#### VEHICLES AFFECTED: 1987-1988 DE VILLES AND FLEETWOODS ----------------- Some 1987-1988 DeVilles and Fleetwoods with base suspension may exhibit a condition of increased power steering system noise. This condition may be caused by the power steering pump. To repair this condition a new power steering pump, P/N 26012285, is available for service from GMSPO. The new pump has a reduced flow rate which reduces noise caused by the pump. 1987 and 1988 DeVilles and Fleetwoods with Touring Ride & Handling Suspension (RPO FE2) must still be serviced with power steering pump P/N 26006703. These vehicles have a close ratio, higher effort steering gear that, when used with the new pump, could result in high steering efforts during certain maneuvers. Refer to Product Service Bulletin 87-3-111 and the appropriate Service Information Manual for power steering noise diagnosis. Refer to Section 3B3 of the appropriate Service Information Manual power steering pump service procedures and to Product Service Bulletin 87-3-108, for revised power steering system bleed procedure.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.