GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Montana 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Blower Motor Always On

Blower Motor Always On Front

Step

Action

Value(s)

Yes

No

1

Was the entire HVAC diagnostic system check performed?

--

Go to Step 2

Go to Diagnostic System Check

2
  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 3

Go to Step 4

3

Repair a short to B+. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 5

--

4

Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement .

Is the repair complete?

--

Go to Step 5

--

5
  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors /components removed.

Have all the repairs been made?

--

Go to Diagnostic System Check

--

Blower Motor Always On Rear, With Ignition In RUN

Step

Action

Value(s)

Yes

No

1

Was the entire HVAC diagnostic system check performed?

--

Go to Step 2

Go to Diagnostic System Check

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

Does the auxilliary blower turn off?

--

Go to Step 3

Go to Step 4

3

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 5

--

4

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 5

--

5
  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors /components removed.

Have all the repairs been made?

--

Go to Diagnostic System Check

--