Power Lumbar
Power Lumbar
To adjust the power lumbar support, if equipped:
• On vehicles with two-way lumbar, press and hold the top or bottom of the control to increase or decrease lumbar support.
• 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 also:
Audio Output
Only one audio source can be heard through the speakers at one time.
An audio source is defined as DVD slot, CD slot, XM, FM-AM, front auxiliary jack, USB port, or rear auxiliary jack.
Press the O b ...
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
Electric Brake Control Wiring Provisions
These wiring provisions are included with the vehicle as part of the trailer wiring package. These provisions are for an electric brake controller. The instrument panel contains blunt cut wires behind ...