Starting And Operating; New Vehicle Break-In; Ignition Positions - GMC Acadia 2013 Owner's Manual

9-14 Driving and Operating
Starting and
Operating

New Vehicle Break-In

Notice: The vehicle does not
need an elaborate break-in. But it
will perform better in the long run
if you follow these guidelines:
If you have all-wheel drive,
keep your speed at 88 km/h
(55 mph) or less for the first
805 km (500 mi).
Do not drive at any one
constant speed, fast or slow,
for the first 805 km (500 mi).
Do not make full-throttle
starts. Avoid downshifting to
brake or slow the vehicle.
Avoid making hard stops for
the first 322 km (200 mi) or
so. During this time the new
brake linings are not yet
broken in. Hard stops with
new linings can mean
premature wear and earlier
replacement. Follow this
breaking-in guideline every
time you get new brake
linings.
Do not tow a trailer during
break-in. See Driving
Characteristics and Towing
Tips on page 9 43 for the
trailer towing capabilities of
your vehicle and more
information.
Following break in, engine speed
and load can be gradually
increased.

Ignition Positions

The ignition switch has four different
positions.
In order to shift out of P (Park), the
ignition must be in ON/RUN or ACC/
ACCESSORY and the brake pedal
must be applied.
Notice: Using a tool to force the
key to turn in the ignition could
cause damage to the switch or
break the key. Use the correct
key, make sure it is all the way in,