WHINE/HUM COMING FROM HVAC BLOWER MOTOR/FAN ASSEMBLY. Saturn Saturn 1991

For 1990-2009 cars

# WHINE/HUM COMING FROM HVAC BLOWER MOTOR/FAN ASSEMBLY

#### SUBJECT: Whine or Hum Coming from HVAC Blower Motor and Fan Assembly (Install Fan Motor Cover)

#### MODELS AFFECTED: All 1991 - 92 Saturns built before, and including VIN NZ191713.

CONDITION: Some owners may hear a whine or hum from the HVAC blower motor when it is turned on.

#### NOTE: If a grinding or clicking noise is heard, refer to Technical Information Bulletin 92-T-41 (281202) - Water or Debris Intrusion into Blower Motor.

CAUSE: The whining or humming noise is caused by the commutator in the blower motor and fan assembly.

CORRECTIVE ACTION: Install new fan motor cover P/N 21030787.

#### PROCEDURES

1. Disconnect blower motor and fan assembly electrical connector. (See figure 1)

2. Remove blower motor and fan assembly mounting screws and remove blower motor and fan assembly. (See figure 2)

3. Remove adhesive backed foam ring from bottom surface of blower motor and fan assembly. (See figure 3)

#### NOTICE: Failure to remove all of foam ring and adhesive will cause the blower motor and fan assembly to overheat and become damaged.

4. Install blower motor and fan assembly and motor cover (P/N 21030787) together with three screws.

5. Connect blower motor and fan assembly electrical connector.

PARTS REQUIREMENTS: 21030787 HVAC Fan Motor Cover

CLAIM INFORMATION: To receive credit for this repair, submit a claim through the Saturn Dealer System as follows:

Labor Case Operation Type Description Code Time ---- ----------- ---------- ---- VW Install HVAC Fan Motor Cover T9638 0.4 hrs

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.