GM Service Manual Online
For 1990-2009 cars only

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

Replace the heater-A/C control. Refer to HVAC Module Assembly Replacement .

Is the repair complete?

--

Go to Step 3

--

3

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

Have all repairs been made?

--

Go to Diagnostic System Check

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