Hydraulic Power Steering
Your vehicle has hydraulic power steering. It may require maintenance. See Power Steering Fluid on page 10‑21.
If power steering assist is lost due to a system malfunction, the vehicle can be steered, but may require increased effort.
See also:
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can
be obtained from your dealer.
If your vehicle has a diesel engine, see the Duramax diesel supplement for more
informa ...
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 ...
Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person
on the other end of the call cannot hear them.
To mute a call, press , and then
say “Mute Call.”
To cancel m ...