Blower Motor Speed Erratic. Buick Park Avenue 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Blower Motor Speed Erratic

Step	Action	Value(s)	Yes	No
1	Inspect all of the connectors and the input circuits to the blower control module for intermittent shorts or opens. Were any repairs made?	--	System OK	Go to Step 2
2	Disconnect the blower motor connector. Inspect the motor terminals for a good connection to the blower motor. Replace the blower motor if any terminals are faulty. Refer to Blower Motor and Fan Replacement . Is the repair complete?	--	System OK	Go to Step 3
3	Replace the blower control module. Refer to Blower Motor Control Module Replacement . Is the repair complete?	--	System OK	--

Step

Action

Value(s)

Yes

Inspect all of the connectors and the input circuits to the blower control module for intermittent shorts or opens.

Were any repairs made?

System OK

Disconnect the blower motor connector.
Inspect the motor terminals for a good connection to the blower motor.
Replace the blower motor if any terminals are faulty. Refer to Blower Motor and Fan Replacement .

Is the repair complete?

System OK

Replace the blower control module. Refer to Blower Motor Control Module Replacement .

Is the repair complete?

System OK