I only ever used the long adjuster on the seat to move the seat foward or back, recently i discovered none of the other smaller switches on the seat work, at all, looking for advice on what to check the seat i assume those are to control the lumbar support, like i said none of them work, but the front to back adjuster the longer bigger rectangle switch works.

 

My passenger's side acted like this when I bought the car. Turns out there was a leak on the right window that dripped right on to the switch and killed those buttons. Had to replace the whole module, thankfully the place I bought it from paid for it. Was $125 or so for the module.

 

thanks, any other input?

 

Can you hear the air pump running when you try to inflate the lumbar or bolsters?

 

If you get the sound when you press it (you would have to do it from outside, with your head down by the seat, its a quiet noise), then the baldders are gone.

You can get bladders from GM or some people have had good experience with using Obese Blood Pressure Cuffs (B/P cuff for fat people). They are cheap, and with very little work slip right in and works as well as the originals.

If you dont get the sound, the seat comes out with foru bolts, the plug may not be connected all the way?

 

I dont hear anything running, nothing happens at all with those switches. Ill double check again but i dont hear anything when i press them, are those switches on a different plug in perhaps? cause the front and back works just none of the lumbar adjustments.

 

anyone else?

 

I'd say it could be one of three things all of which are common problems

I'd start with the connector. Pull the connector and check the circuits with a multi meter. Select each function in turn and see if you have a voltage. If not, its an issue with the motors. If you do, then I'd turn to the bladders. There are a number of 90 degree pipe connectors in the system. They become brittle with age and can break allowing air to escape. New connectors should fix it. It's unusual for the bladders themselves to spring a leak. You can get to the bladders without taking the seat out. Unzip the covers around the seat back and it should give enough access to check.

Failing that as Texas Dave suggests it may be a switch issue. They are notoriously unreliable and many have drained batteries due to bad switches.

Have to say that if the seat is motoring but the other functions are bad I'd be thinking bladders.

Here's the connector info:



Connector Part Information


* 12160773
* 26-Way F (NAT)

Pin

Wire Color

Circuit No.

Function

1

DK BLU

1520

Power Seat Switch Signal-Front Down

2


--


--


Not Used

3


YEL


1519


Power Seat Switch Signal-Rear Up

4


--


--


Not Used

5


GRY


764


Relay Coil Feed-Upper Lumbar Deflate (Telescopic and Memory)

6


--


--


Not Used

7


GRY/BLK


1798


Power Seat Switch Return

8


--


--


Not Used

9


GRY/BLK


466


Relay Coil Feed-Side Bolster Deflate (Telescopic and Memory)

10


--


--


Not Used

11


PNK


789


Relay Coil Feed-Lower Lumbar Inflate (Telescopic and Memory)

12


--


--


Not Used

13


BRN


617


Power Seat Switch Signal-Horizontal Aft

14


GRY


613


Power Seat Switch Signal-Horizontal Forward

15


--


--


Not Used

16


YEL


777


Relay Coil Feed-Upper Lumbar Inflate (Telescopic and Memory)

17


--


--


Not Used

18


PPL


765


Relay Coil Feed-Side Bolster Inflate (Telescopic and Memory)

19


--


--


Not Used

20


ORN


1740


Battery Fused Feed (Telescopic and Memory)

21


--


--


Not Used

22


YEL


386


Relay Coil Feed-Lower Lumbar Inflate (Telescopic and Memory)

23


--


--


Not Used

24


LT BLU


1521


Power Seat Switch Signal-Rear Down

25


--


--


Not Used

26


DK GRN


1518


Power Seat Switch Signal-Front Up

 

thank you, ill have to take the seat out and check it out this weekend.

 

Had the same issue with mine replaced the switch and all worked great.Found 1 on fleabay.

 

the entire switch or what did you replace exactly?

 

The switch is a single unit:

Seat Switch Replacement - Power
Removal Procedure

1. Remove the seat back recliner handle.
1. With a suitable blunt ended tool inserted between the cushion and the handle push the handle retaining spring clip down.
2. Pull the handle from the shaft.

2. Remove the screws attaching the seat side trim panel.

3. Rock the panel side to side working the barrel post clip (1) out of the seat frame.

4. Reposition panel away from the seat.

5. Disconnect the switch harness.
6. Remove the switch.

Installation Procedure

1. Install the switch to the side trim panel.

2. Install a new barrel clip (1) to the trim panel upper barrel post (2).
3. Connect the switch harness.

4. Install the seat side trim panel.
* Push the barrel post with clip through the hole in the seat cover and into the seat frame.
* Install the front and rear trim panel attaching screws.

5. Install the seat back recliner handle.
1. Position the handle retaining spring clip into the lock position.
2. Snap the handle onto the reclining mechanism shaft.

 

After leaving my car outside for two days in the rain I am now faced with this switch replacement procedure. (coincidence... i think not) Yaay for me. It seems fairly straight forward then again I'm not very adept at fixing cars. Anyone run into problems replacing the switch?

 

Question about step 2 of install - you need to replace the barrel clip? Anyone have a part number, are these easy to find online?