GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 LSS 🢒 Body and Accessories 🢒 Seats 🢒 Lumbar Support Does Not Deflate

Lumbar Support Does Not Deflate Pontiac w/AL7

Step

Action

Value(s)

Yes

No

1

Did you perform the Lumbar Support System Check?

--

Go to Step 2

Go to Lumbar Support System Check

2
  1. Disconnect the seat air control module connector.
  2. Connect a DMM from the seat air control module connector cavity H (GRY) to ground.
  3. Operate any of the deflate switches.

Is the voltage within the specified range when the switches are operated?

10-15V

Go to Step 5

Go to Step 3

3

Test for an open or short to ground in CKT 764 (GRY) between the console seat switch and the seat air control module. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems.

Is CKT 764 OK?

--

Go to Step 4

Go to Step 6

4

Replace the console seat switch.

Is the repair complete?

--

Go to Lumbar Support System Check

--

5

Replace the seat air control switch.

Is the repair complete?

--

Go to Lumbar Support System Check

--

6

Repair the open or short to ground in CKT 764 (GRY) between the console seat switch and the seat air control module. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Lumbar Support System Check

--

Lumbar Support Does Not Deflate Oldsmobile w/AL2

Step

Action

Value(s)

Yes

No

1

Did you perform the Lumbar Support System Check?

--

Go to Step 2

Go to Lumbar Support System Check

2

Replace the lumbar switch.

Is the repair complete?

--

Go to Lumbar Support System Check

--