GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the system operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms - Seats

2

Attempt to operate the power seat in all directions.

Does the seat adjust normally in all directions?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Connect a test lamp between the power seat switch terminal F (AG1) or A (AQ9) and ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 4

Go to Step 5

4

Connect a test lamp between the power seat switch terminals F and C (AG1) or A and D (AQ9). Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 6

Go to Step 8

5

Repair a poor connection or an open in the battery voltage circuit of the power seat switch. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 9

--

6

Inspect for and repair a poor connection at the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

--

Go to Step 9

Go to Step 7

7

Replace the power seat switch. Refer to Power Seat Adjuster Mechanism Replacement .

Did you complete the replacement?

--

Go to Step 9

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8

Repair a poor connection or an open in the ground circuit of the power seat switch . Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3