GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the HVAC Blower Controls System Check performed?

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Go to Step 2

Go to HVAC Blower Controls System Check

2

  1. Turn the ignition switch to the ON position.
  2. Move the blower speed selector switch to the HIGH position.
  3. Backprobe the blower speed selector switch connector with a test light from terminal 3 to ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Repair the open in the PNK wire between the blower speed selector switch and S232. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to HVAC Blower Controls System Check

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4

Replace the blower speed selector switch. Refer to Control Assembly Replacement .

Is the repair complete?

--

Go to HVAC Blower Controls System Check

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