GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Seat Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Power Seat Systems

2

Verify that the power seat is inoperative.

Does the power seat operate normally?

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

Go to Step 3

3

Test the seat adjuster switch feed circuit for voltage. Refer to Circuit Testing in wiring systems.

Does the voltage measure near the specified value?

B+

Go to Step 4

Go to Step 9

4

Test for voltage between the seat adjuster switch feed circuit and the seat adjuster switch ground circuit. Refer to Circuit Testing in wiring systems.

Does the voltage measure near the specified value?

B+

Go to Step 5

Go to Step 10

5

Test the seat adjuster feed circuit for vlotage while operating the seat adjuster switch. Refer to Circuit Testing in wiring systems.

Is voltage present?

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Go to Step 6

Go to Step 7

6

Locate and repair a high resistance in the seat adjuster switch ground circuit. Refer to Circuit Testing and Wiring Repairs in wiring systems.

Did you complete the repair?

--

Go to Step 12

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7

Did the POWER SEATS Circuit Breaker click when the seat adjuster switch was operated?

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Go to Step 8

Go to Step 11

8

Locate and repair a resistive short to ground in the seat adjuster feed circuit. Refer to Circuit Testing and Wiring Repairs in wiring systems.

Did you complete the repair?

--

Go to Step 12

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9

Locate and repair an open or high resitance in the seat adjuster feed circuit. Refer to Circuit Testing and Wiring Repairs in wiring systems.

Did you complete the repair?

--

Go to Step 12

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10

Locate and repair an open or high resitance in the seat adjuster ground circuit. Refer to Circuit Testing and Wiring Repairs in wiring systems.

Did you complete the repair?

--

Go to Step 12

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11

Replace the seat adjuster switch. Refer to Power Seat Switch Replacement .

Did you complete the repair?

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Go to Step 12

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12

Operate the system in order to verify the repair.

Did you find and correct the condition?

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System OK

Go to Step 3