2011 Chevrolet Avalanche Owner's Manual - Page 13

In Brief Lumbar Adjustment Manual Lumbar Power Lumbar . 1-7 On vehicles with four-way lumbar, press and hold the front or rear of the control to increase or decrease lumbar support. To raise or lower the height of the support, press and hold the top or bottom of the control. See Lumbar Adjustment on page 3‑6 for more information. To adjust the power lumbar support, if equipped: If equipped, increase or decrease manual lumbar support by turning the knob forward or rearward. See Lumbar Adjustment on page 3‑6 for more information. . On vehicles with two-way lumbar, press and hold the top or bottom of the control to increase or decrease lumbar support.