Chevrolet/GMC 2013 DURAMAX Diesel, Owner'S Manual

Page: 44 / 136

Black plate (18,1)
Chevrolet/GMC DURAMAX Diesel - 2013 - CRC - 5/29/12
9-18 Driving and Operating
When the mileage countdown is
zero, the DIC message SERVICE
EMISSION SYSTEM - SEE
OWNERS MANUAL NOW -
TRANSITIONING TO 89 KM/H
(55 MPH) MAX SPEED displays.
A chime also comes on. Vehicle
speed will be reduced to a
maximum speed limit of 89 km/h
(55 mph).
After the transition to 89 km/h
(55 mph) is complete, the DIC
message SERVICE EMISSION
SYSTEM - SEE OWNERS
MANUAL NOW - SPEED LIMITED
TO 89 KM/H (55 MPH) displays.
A chime also comes on.
Brakes
Exhaust Brake
The heavy duty diesel pickups have
an exhaust brake to enhance the
vehicle brake system, and reduce
brake lining wear. A switch is used
to activate the system, and is
located below the climate controls in
the center of the vehicle instrument
panel. The switch must be pressed
at each vehicle start for the system
to be active. A light in the switch will
come on when the exhaust brake is
activated.
The Driver Information Center (DIC)
displays the message EXHAUST
BRAKE ENABLED for
approximately 10 seconds, then
clears.
To turn the brake off, press the
exhaust brake switch a second time.
The DIC displays the message
EXHAUST BRAKE DISABLED for
approximately 10 seconds, then
clears.
Downshifts may be automatically
selected to increase engine speed,
which increases the effectiveness of
the exhaust brake. The number of
downshifts selected is determined
by the length of time the brakes are
applied, and the rate the vehicle is
slowing. The system delivers the
correct amount of braking to assist
in vehicle control. The heavier the
vehicle load, the more active the
engine exhaust brake will be. Use of
the exhaust brake will help maintain
vehicle speed when used with
cruise control. See
“ Cruise Control ”
in the owner manual.