GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Riviera 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Does Not Tilt Forward

Power Seat Does Not Tilt Forward Buick

Step

Action

Value(s)

Yes

No

1

Was the entire Power Seats System Check performed?

--

Go to Step 2

Go to Power Seats System Check

2
  1. Turn the ignition switch to the OFF position.
  2. Using a test lamp, backprobe the seat front vertical motor connector from cavity B (DK GRN) to ground.
  3. Move the front vertical switch up.

Does the test lamp light?

--

Go to Step 5

Go to Step 3

3

Inspect CKT 286 (DK GRN) (left) or CKT 297 (LT GRY) (right) for an open between the seat switch and the seat front vertical motor. Refer to Testing for Continuity in Wiring Systems.

Is CKT 286 or CKT 297 OK?

--

Go to Step 4

Go to Step 8

4

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

Is the repair complete?

--

Go to Power Seats System Check

--

5
  1. Using a test lamp, backprobe the seat front vertical motor connector from cavity A (DK BLU) to ground.
  2. Move the front vertical switch down.

Does the test lamp light?

--

Go to Step 7

Go to Step 6

6

Inspect CKT 287 (DK BLU) (left) or CKT 298 (WHT) (right) for an open between the seat switch and the seat front vertical motor. Refer to Testing for Continuity in Wiring Systems.

Is CKT 287 or CKT 298 OK?

--

Go to Step 4

Go to Step 8

7

Replace the seat front vertical motor.Refer to Front Seat Adjuster Motor Replacement .

Is the repair complete?

--

Go to Power Seats System Check

--

8

Repair the suspect circuit. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Seats System Check

--

Power Seat Does Not Tilt Forward Oldsmobile

Step

Action

Value(s)

Yes

No

1

Was the entire Power Seats System Check performed?

--

Go to Step 2

Go to Power Seats System Check

2
  1. Turn the ignition switch to the OFF position.
  2. Using a test lamp, backprobe the right seat switch connector from cavity R (DK GRN) to ground.
  3. Move the front vertical switch up.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

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

Is the repair complete?

--

Go to Power Seats System Check

--

4
  1. Using a test lamp, backprobe the right seat switch connector from cavity S (DK BLU) to ground.
  2. Move the front vertical switch down.

Does the test lamp light?

--

Go to Step 5

Go to Step 3

5
  1. Using a test lamp, backprobe the right seat front vertical motor connector from cavity B (DK GRN) to ground.
  2. Move the front vertical switch down.

Does the test lamp light?

--

Go to Step 6

Go to Step 8

6
  1. Using a test lamp, backprobe the right seat front vertical motor connector from cavity A (DK BLU) to ground.
  2. Move the front vertical switch down.

Does the test lamp light?

--

Go to Step 7

Go to Step 9

7

Replace the right seat front vertical motor. Refer to Front Seat Adjuster Motor Replacement .

Is the repair complete?

--

Go to Power Seats System Check

--

8

Repair the open in CKT 297 (DK GRN) between the right seat switch and the right seat front vertical motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Seats System Check

--

9

Repair the open in CKT 298 (DK BLU) between the right seat switch and the right seat front vertical motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Seats System Check

--