For 1990-2009 cars

# BLOWER MOTOR FAILS TO RUN CHANGE MODE SWITCH ASSEMBLY

#### SUBJECT: BLOWER MOTOR FAILS TO RUN (CHANGE SWITCH)

#### VEHICLES AFFECTED: 1987-90 BUICK

#### CONDITION:

---------- There have been comments received that the blower motor fails to turn on.

#### CAUSE:

------- The cause has been found to be failed electrical contacts inside the mode switch assembly located in the control head assembly as shown in Figure 1.

#### CORRECTION:

------------ This condition may be corrected by changing the mode switch assembly in the control head with a new switch P/N #22567340. Refer to Figure 2.

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.