GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire power system check performed?

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Go to Step 2

Go to Power Seats System Check

2

  1. Using a DMM, backprobe between the front height motor connector terminals A and B.
  2. Press and hold the front end of the driver seat adjuster switch in the UP and then DOWN positions.

Is there voltage present in both directions?

9-14 V

Go to Step 3

Go to Step 4

3

Replace the front height motor. Refer to Front Seat Power Recliner Replacement .

Is the repair complete?

--

Go to Step 9

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4

  1. Disconnect the power seat switch.
  2. Check for a short to ground in circuits 286 and 287.

Is a short to ground present?

--

Go to Step 5

Go to Step 6

5

Repair a short to ground in circuit 286 or 287.

Is the repair complete?

--

Go to Step 9

--

6

Using a DMM, check continuity in circuits 286 and 287.

Is there continuity in both circuits?

--

Go to Step 7

Go to Step 8

7

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

Is the repair complete?

--

Go to Step 9

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8

Repair the poor connection or open in circuit 286 or 287.

Is the repair complete?

--

Go to Step 9

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9

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors/components removed.

Have all the repairs been made?

--

Go to Power Seats System Check

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