GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the auxiliary power outlet operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

2

Verify that the auxiliary power outlet is inoperative

Does the system operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Inspect the POWER DROP fuse in the Fuse Block for an open.

Is the fuse open?

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Go to Step 4

Go to Step 5

4

    • Use a DMM to test the auxiliary power outlet feed circuit for a short to ground. Refer to Testing for Short to Ground Circuit Testing and Wiring Repairs Wiring Repairs in Wiring Systems.
    • Replace the POWER DROP fuse.

Did you find and correct a short to ground in the circuit?

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Go to Step 8

Go to Step 7

5

Use a test lamp to test the auxiliary power outlet ground circuit for a loose connection or an open. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent and Poor Connections and Connector Repairs Connector Repairs in Wiring Systems.

Did you find and correct a loose connection or an open in the auxiliary power outlet ground circuit?

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Go to Step 8

Go to Step 6

6

Test for an open or a loose connection on the auxiliary power outlet feed circuit. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent and Poor Connections and Connector Repairs Connector Repairs in Wiring Systems.

Did you find and correct an open or a loose connection in the auxiliary power outlet feed circuit?

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Go to Step 8

Go to Step 7

7

Replace the auxiliary power outlet. Refer to Floor Console Accessory Power Receptacle Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

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Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Symptoms