GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Memory Seats Schematics

DEFINITION: When the memory 1 or 2 select switches are pressed the seat does not return to the stored position settings.

1

Did you perform the Power Seat Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Power Seat Systems

2

Attempt to operate the memory seat recall functions.

Do the memory seat recall functions operate properly?

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

Go to Step 3

3

  1. Install a scan tool.
  2. Display the LDCM inputs data list.
  3. Press the appropriate memory select switch.

Does the scan tool indicate the switch status is active?

Go to Step 6

Go to Step 4

4

  1. Disconnect the LH door switch.
  2. Connect a fused jumper from the appropriate memory select switch signal circuit terminal to the ground circuit terminal in the door switch harness connector.

Does the scan tool indicate the switch status is active?

Go to Step 8

Go to Step 5

5

Test the memory select switch signal circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 10

6

Test the position sensor 5 volt reference circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 7

7

Test the position sensor low reference circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 12

8

Inspect for poor connections at the LH door switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 9

9

Replace the LH door switch. Refer to Front Door Switch Replacement in Doors.

Is the repair complete?

Go to Step 14

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10

Inspect for poor connections at the LH door control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 11

11

Replace the LH door control module. Refer to Door Control Module Replacement in Doors.

Is the repair complete?

Go to Step 14

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12

Inspect for poor connections at the memory seat module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 13

13

Replace the memory seat module. Refer to Memory Seat Control Module Replacement .

Is the repair complete?

Go to Step 14

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14

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3