Blower Motor Always On. Buick GL7 (Export) 2000

For 1990-2009 cars

## Blower Motor Always On Front

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the Blower Controls Circuit Description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 | Verify that the front blower motor is always on. Does the front blower motor operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3

3

1. Turn the ignition switch to the OFF position.
2. Disconnect the blower motor resistor.
3. Check for a short to B+ in CKT 60, 63, 72, 73, or 52. Refer to Circuit Testing in Wiring Systems.

Is a short to B+ present?

--

Go to Step 4

Go to Step 5

4 | Repair a short to B+. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 6 | --
5 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | Go to Step 6 | --

6

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors /components removed.
3. Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3

## Blower Motor Always On Rear, With Ignition In RUN

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the Blower Controls Circuit Description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 | Verify that the rear blower motor is always on with the ignition switch in the RUN position. Does the rear blower motor operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3

3

1. Turn the ignition switch to the RUN position.
2. Turn both auxiliary blower switches to the OFF position.
3. Disconnect the rear window wiper/washer and multi-function switch connector C2.

Does the auxiliary blower turn off?

--

Go to Step 4

Go to Step 5

4 | Replace the rear window wiper/washer and multi-function switch. Refer to Auxiliary Air Conditioning (A/C) Control Assembly Replacement - Front . Is the repair complete? | -- | Go to Step 6 | --
5 | Repair a short to B+ in circuit 1176, 1072, or 1052. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 6 | --

6

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors /components removed.
3. Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3