HUB ASSY. SEAL SQUEAK/SQUAWK NOISE (LUBE SEAL & HUB ASSY.)

Subject: HUB ASSEMBLY SEAL SQUEAK/SQUAWK NOISE

Month and Year: 1990-91 LUMINA (APV)

CONDITION:

---------- Some owners of 1990-91 U-van models may comment about a squeak or squawk noise coming from the front of the vehicle in or near the front wheels. This condition may be caused by insufficient grease on the lip seal of the hub assembly.

CORRECTION:

----------- Disconnect Hub Assembly following service manual "on-vehicle service" procedure for front suspension in Section 3C. Lubricate Hub and Seal area with GM1052497 grease thoroughly (fill cavity between seal and bearing).

NOTE: ----- For 1992 model vehicles, this condition has been eliminated with the introduction of a new Hub and Assembly design, which requires no lubrication.

WARRANTY INFORMATION:

Use applicable Labor Time Guide Operation Number and Time.

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.