GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 DeVille 🢒 Body and Accessories 🢒 Seats 🢒 Memory Seats System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Place the gear selector in PARK.
  2. Operate the left seat switch in each of the following directions:
    3. • Front vertical: UP
    • Front vertical: DOWN
    • Rear vertical: UP
    • Rear vertical: DOWN
    • Entire seat: UP
    • Entire seat: DOWN
    • Forward/back: FORWARD
    • Forward/back: BACK
    • Recline: FORWARD
    • Recline: BACK

The left seat moves in the appropriate direction.
    •  Power Seat Inoperative
    •  Power Seat Inoperative

2

Press the MEMORY-1 button.
    • A single beep sounds.
    • The following components move to the positions programmed for driver 1:
       - The left seat
       - The left lumbar support
       - Both of the mirrors

Outside Mirrors System Check

3

Press the MEMORY-2 button.
    • A single beep sounds.
    • The following components move to the positions programmed for driver 2:
       - The left seat
       - The left lumbar support
       - Both of the mirrors

Outside Mirrors System Check

4

Press the EXIT button.
    • A single beep sounds.
    • The left seat moves to the exit position programmed for the last driver in order to perform a memory record or recall function.

Outside Mirrors System Check

5
  1. Move the following components to the desired position:
    2. • The left seat
    • The lumbar support
    • Both of the mirrors
  2. Press and hold the MEMORY-1 button for the appropriate driver for 3 seconds.
  3. Move the following components in all directions to random positions:
    4. • The left seat lumbar support
    • Both of the mirrors
  4. Press the MEMORY-1 button.
  1. The seat moves in the appropriate direction.
  2. A single beep sounds.
  3. Current positions for the following components store in memory:
    4. • The left seat
    • The left lumbar support
    • Both of the mirrors
  4. The seat moves in the appropriate direction.
  5. The following components move to the stored positions:
    6. • The left seat
    • The left lumbar support
    • Both of the mirrors

Outside Mirrors System Check

6
  1. Apply the parking brake.
  2. Move the gear selector out of PARK.
  3. Briefly press the MEMORY-1 switch.

The following components do not move:

    • The seat
    • The mirrors

Automatic Transmission Shift Lock Control System Check

7
  1. Press the driver-1 keyless entry transmitter UNLOCK button.
  2. Press the driver-2 keyless entry transmitter UNLOCK button.

There are 3 personalized options for the recall function. Ensure that the following components perform the programmed option:

    • The seats
    • The mirrors

Refer to Memory Seat Circuit Description .

Remote Keyless Entry System Check

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.