GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

Schematic Reference: Driver Seat Schematics

Connector End View Reference: Power Seat Connector End Views

DEFINITION: One or more of the memory recall functions are inoperative.

1

Did you perform the Diagnostic System Check - Vehicle?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Attempt to set and recall memory 1, memory 2, and exit seat position settings.

Does the system operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Install a scan tool.
  2. Observe the Memory Switch parameter in the driver door switch data list.
  3. Press the memory 1 switch.

Does the scan tool display the memory 1 switch as Active only while the switch is pressed?

--

Go to Step 4

Go to Step 6

4

  1. Observe the Memory Switch parameter in the driver door switch data list.
  2. Press the memory 2 switch.

Does the scan tool display the memory 2 switch as Active only while the switch is pressed?

--

Go to Step 5

Go to Step 7

5

  1. Observe the Memory Switch parameter in the driver door switch data list.
  2. Press the EXIT switch.

Does the scan tool display the EXIT switch as Active only while the switch is pressed?

--

Go to Step 11

Go to Step 8

6

  1. Disconnect the memory switch connector from the driver door switch.
  2. Using a DMM, test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing and to Wiring Repairs .
  3. Press the memory 1 switch.

Is the resistance at or near the specified value only while the switch is pressed?

2.26K ohms

Go to Step 12

Go to Step 10

7

  1. Disconnect the memory switch connector from the driver door module.
  2. Using a DMM, test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing and to Wiring Repairs .
  3. Press the memory 2 switch.

Is the resistance at or near the specified value only while the switch is pressed?

4.26K ohms

Go to Step 12

Go to Step 10

8

  1. Disconnect the memory switch connector from the driver door module.
  2. Using a DMM, test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing and to Wiring Repairs .
  3. Press the EXIT switch.

Is the resistance at or near the specified value only while the switch is pressed?

9.25K ohms

Go to Step 9

Go to Step 10

9

Test the memory switch signal circuits in the switch harness for a short to ground or voltage. Refer to Circuit Testing .

Are either of the switch signal circuits shorted to ground or voltage?

--

Go to Step 13

Go to Step 12

10

Inspect for poor connections at the memory switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

--

Go to Step 16

Go to Step 13

11

Inspect for poor connections at the driver seat module connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

--

Go to Step 16

Go to Step 14

12

Inspect for poor connections at the driver door switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

--

Go to Step 16

Go to Step 15

13

Replace the memory switch. Refer to Front Side Door Trim Panel Replacement - Left Side .

Is the repair complete?

--

Go to Step 16

--

14

Replace the driver seat module. Refer to Control Module References for replacement, setup, and programming.

Is the repair complete?

--

Go to Step 16

--

15

Replace the driver door switch. Refer to Control Module References for replacement, setup, and programming.

Is the repair complete?

--

Go to Step 16

--

16

Operate the memory seat system to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3