2009 GMC SIERRA 1500 check engine light

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Page 232 of 602

GMC SIERRA 1500 2009  Owners Manual Emissions Inspection and
Maintenance Programs
Some state/provincial and local governments have or
might begin programs to inspect the emission control
equipment on the vehicle. Failure to pass this in

Page 233 of 602

GMC SIERRA 1500 2009  Owners Manual A reading outside the normal operating range can be
caused by a dangerously low oil level or some other
problem causing low oil pressure. Check the vehicle’s oil
as soon as possible. See “OIL PRES

Page 250 of 602

GMC SIERRA 1500 2009  Owners Manual DIC Warnings and Messages
Messages are displayed on the DIC to notify the driver
that the status of the vehicle has changed and that
some action may be needed by the driver to correct the
condition. M

Page 256 of 602

GMC SIERRA 1500 2009  Owners Manual SERVICE BRAKES SOON
This message displays if there is a problem with the
brake system. If this message appears, stop as soon as
possible and turn off the vehicle. Restart the vehicle and
check for the

Page 257 of 602

GMC SIERRA 1500 2009  Owners Manual SERVICE TRAILER BRAKE SYSTEM
On vehicles with the Integrated Trailer Brake Control
(ITBC) system, this message displays and a chime
sounds when there is a problem with the ITBC system.
When this messa

Page 258 of 602

GMC SIERRA 1500 2009  Owners Manual TIGHTEN GAS CAP
This message may display along with the check engine
light on the instrument panel cluster if the vehicle’s fuel
cap is not tightened properly. SeeMalfunction Indicator
Lamp on page

Page 331 of 602

GMC SIERRA 1500 2009  Owners Manual Antilock Brake System (ABS)
This vehicle has the Antilock Brake System (ABS), an
advanced electronic braking system that helps prevent a
braking skid.
When the engine is started and the vehicle begins

Page 357 of 602

GMC SIERRA 1500 2009  Owners Manual {CAUTION:
Snow can trap engine exhaust under the vehicle.
This may cause exhaust gases to get inside.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsc
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