Manual Lumbar :: Lumbar Adjustment :: Front Seats :: Seats and Restraints :: GMC Sierra Owners Manuals :: GMC Sierra | GMCia.com

Manual Lumbar

GMC Sierra / GMC Sierra Owners Manuals / Seats and Restraints / Front Seats / Lumbar Adjustment / Manual Lumbar

Manual Lumbar

If equipped, increase or decrease manual lumbar support by turning the knob forward or rearward.

See also:

Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating on page 10‑20. ...

Rear Seats
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Safety
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