GM Service Manual Online
For 1990-2009 cars only

Object Number: 1553415  Size: A2

On vehicles with this feature, the switch is located on the outboard side of the front seats behind the lumbar switch.

Press the switch to turn the massaging lumbar feature on. The ignition must be on for this feature to work. The massage cycle will run for up to 10 minutes. To stop massage, press the massaging lumbar switch again or press the power lumbar switch.