GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire HVAC System Check performed?

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Go to Step 2

Go to HVAC 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.

Is a short to B+ present?

--

Go to Step 3

Go to Step 4

3

Repair a short to B+.

Is the repair complete?

--

Go to Step 5

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4

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

Is the repair complete?

--

Go to Step 5

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5

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

Have all the repairs been made?

--

Go to HVAC System Check

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