lumbar support GMC YUKON 1999 Owner's Manual

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1-3 Power Lumbar Adjustment
Your vehicle has a power lumbar adjuster. You can
increase or decrease lumbar support in an area of the
lower seatback.
To increase support, press and hold the front of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.
To decrease support, press and hold the rear of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.
Heated Front Seats
The control for the driver's side heated seat is located on
the left side of the seat. The control for the right front
passenger is located on the right side of the passenger
seat. Move the switch forward to MED or HIGH
temperature to turn on the heating elements in the seat.
The right front passenger's safety belt must be buckled
before the heating elements in that seat will operate. To
turn the heated seats off, move the switch rearward to
OFF. For information on heated rear seats, see ªHeated
Rear Seatsº in the Index.