GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Heated Mirror System Check performed?

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Go to Step 2

Go to Heated Mirror System Check

2

  1. Disconnect the heater and A/C controller C3 connector.
  2. Connect an unpowered test lamp between the heater and A/C controller C3 connector, cavity D, and ground.

Does the test lamp light?

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Go to Step 3

Go to Step 4

3

Repair the short to power in CKT 267 (ORN) between the heater and A/C controller C3 connector and the convenience center.

Refer to Wiring Repairs .

Is the repair complete?

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Go to Heated Mirror System Check

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4

Replace the heater and A/C controller.

Refer to Control Assembly Replacement .

Is the repair complete?

--

Go to Heated Mirror System Check

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