TTY Users
OnStar has the ability to communicate to the deaf, hard&-ofhearing, or speech&-impaired customers while in the vehicle. The available dealer&-installed TTY system can provide in-vehicle access to all of the OnStar services, except Virtual Advisor and OnStar Turn&-by&-Turn Navigation.
See also:
How to Add Coolant to the Coolant Surge Tank
Notice: This vehicle has a specific coolant fill procedure. Failure to follow
this procedure could cause the engine to overheat and be severely damaged.
If you have not found a problem yet, check t ...
Transmission Messages
SERVICE 4 WHEEL DRIVE
If the vehicle has four-wheel drive, this message may display if a problem occurs with the four-wheel-drive system. If this message appears, stop as soon as possible and turn of ...
Performance
One reason the Acadia gets better gas mileage than traditional SUVs is its
V-6 engine. Many full-size SUVs are offered with thirsty V-8s, but the Acadia
only comes with a 3.6-liter V-6 that produc ...