GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Power Seats System Check performed?

--

Go to Step 2

Go to Power Seats System Check

2

Does the front left/right power seat not tilt up or down?

--

Go to Step 3

Go to Step 18

3

  1. Disconnect the left/right power seat motor connector.
  2. Connect a J 39200 between the left/right power seat motor connector cavity E for the CKT 286 (DK GRN) pigtail wire and ground.

Is continuity present?

--

Go to Step 7

Go to Step 4

4

Inspect for an open in the CKT 286 (DK GRN) pigtail wire between the left/right power seat switch and the left/right power seat motor connector.

Did you find an open?

--

Go to Step 5

Go to Step 6

5

Repair the open in the CKT 286 (DK GRN) pigtail wire between the left/right power seat switch and the left/right power seat motor connector. Refer to SIR/SRS Wiring Repairs .

Does the left/right power seat still not tilt up or down in the front?

--

Go to Step 7

Go to Power Seats System Check

6

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the front?

--

Go to Step 7

Go to Power Seats System Check

7

  1. Connect an unpowered test lamp between the left/right power seat motor connector cavity E for the CKT 286 (DK GRN) pigtail wire and ground.
  2. Press the power seat switch front tilt lever in the up direction.

Does the test lamp light?

--

Go to Step 9

Go to Step 8

8

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the front?

--

Go to Step 9

Go to Power Seats System Check

9

Connect a J 39200 between the left/right power seat motor connector cavity F for the CKT 287 (DK BLU) pigtail wire and ground.

Is continuity present?

--

Go to Step 13

Go to Step 10

10

Inspect for an open in the CKT 287 (DK BLU) pigtail wire between the left/right power seat switch and the left/right power seat motor connector.

Did you find an open?

--

Go to Step 11

Go to Step 12

11

Repair the open in the CKT 287 (DK BLU) pigtail wire between the left/right power seat switch and the left/right power seat motor connector. Refer to SIR/SRS Wiring Repairs .

Does the left/right power seat still not tilt up or down in the front?

--

Go to Step 13

Go to Power Seats System Check

12

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the front?

--

Go to Step 13

Go to Power Seats System Check

13

  1. Connect an unpowered test lamp between the left/right power seat motor connector cavity F for the CKT 287 (DK BLU) pigtail wire and ground.
  2. Press the power seat switch front tilt lever in the down direction.

Does the test lamp light?

--

Go to Step 14

Go to Step 17

14

Inspect for an open in the left/right power seat front tilt motor pigtail leads.

Did you find an open?

--

Go to Step 15

Go to Step 16

15

Repair the open in the left/right power seat front tilt motor pigtail leads. Refer to SIR/SRS Wiring Repairs .

Does the left/right power seat still not tilt up or down in the front?

--

--

Go to Power Seats System Check

16

Replace the left/right power seat front tilt motor.

Does the left/right power seat still not tilt up or down in the front?

--

--

Go to Power Seats System Check

17

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the front?

--

--

Go to Power Seats System Check

18

  1. Disconnect the left/right power seat motor connector C2.
  2. Connect a J 39200 between the left/right power seat connector C2 cavity A for the CKT 282 (YEL) pigtail wire and ground.

Is continuity present?

--

Go to Step 22

Go to Step 19

19

Inspect for an open in the CKT 282 (YEL) pigtail wire between the left/right power seat switch and the left/right power seat motor connector C2.

Did you find an open?

--

Go to Step 20

Go to Step 21

20

Repair the open in the CKT 282 (YEL) pigtail wire between the left/right power seat switch and the left/right power seat motor connector C2. Refer to SIR/SRS Wiring Repairs .

Does the left/right power seat still not tilt up or down in the rear?

--

Go to Step 22

Go to Power Seats System Check

21

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the rear?

--

Go to Step 22

Go to Power Seats System Check

22

  1. Connect an unpowered test lamp between the left/right power seat connector C2 cavity A for the CKT 282 (YEL) pigtail wire and ground.
  2. Press the power seat switch rear tilt lever in the up direction.

Does the test lamp light?

--

Go to Step 24

Go to Step 23

23

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the rear?

--

Go to Step 24

Go to Power Seats System Check

24

Connect a J 39200 between the left/right power seat connector C2 cavity B for the CKT 283 (LT BLU) pigtail wire and ground.

Is continuity present?

--

Go to Step 28

Go to Step 25

25

Inspect for an open in the CKT 283 (LT BLU) pigtail wire between the left/right power seat switch and the left/right power seat motor connector C2.

Did you find an open?

--

Go to Step 26

Go to Step 27

26

Repair the open in the CKT 283 (LT BLU) pigtail wire between the left/right power seat switch and the left/right power seat motor connector C2. Refer to SIR/SRS Wiring Repairs .

Does the left/right power seat still not tilt up or down in the rear?

--

Go to Step 28

Go to Power Seats System Check

27

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the rear?

--

Go to Step 28

Go to Power Seats System Check

28

  1. Connect an unpowered test lamp between the left/right power seat connector C2 cavity B for the CKT 283 (LT BLU) pigtail wire and ground.
  2. Press the power seat switch rear tilt lever in the down direction.

Does the test lamp light?

--

Go to Step 29

Go to Step 32

29

Inspect for an open in the left/right power seat rear tilt motor pigtail leads.

Did you find an open?

--

Go to Step 30

Go to Step 31

30

Repair the open in the left/right power seat rear tilt motor pigtail leads. Refer to SIR/SRS Wiring Repairs .

Does the left/right power seat still not tilt up or down in the rear?

--

--

Go to Power Seats System Check

31

Replace the left/right power seat motor.

Does the left/right power seat still not tilt up or down in the rear?

--

--

Go to Power Seats System Check

32

Replace the left/right power seat switch. Refer to Power Seat Switch Replacement .

Does the left/right power seat still not tilt up or down in the rear?

--

--

Go to Power Seats System Check