Service Brake System; Service Ride Control; Service Charging System; Tighten Fuel Cap - GMC 2005 Sierra 1500 Pickup Owner's Manual

SERVICE BRAKE SYSTEM

If there is a problem with the brake system, this
message will be displayed on the DIC. If this message
appears, stop as soon as possible and turn off the
vehicle. Restart the vehicle and check for the message
on the DIC display. If the message is still displayed
or appears again when you begin driving, the brake
system needs service. See your GM dealer.

SERVICE CHARGING SYSTEM

On some vehicles, if there is a problem with the battery
charging system, this message will appear on the
DIC. Under certain conditions, the battery warning light
may also turn on in the instrument panel cluster.
See Battery Warning Light on page 3-38. The battery
will not be charging at an optimal rate and the vehicle
will lose the ability to enter the fuel economy mode. The
vehicle is safe to drive, however you should have the
electrical system checked by your GM dealer. Pressing
any of the four DIC buttons, if equipped, will
acknowledge the message and clear it from the DIC
display. If your vehicle is not equipped with the four DIC
buttons, pressing the trip odometer reset stem will
acknowledge the message and clear it from the DIC
display.

SERVICE RIDE CONTROL

If a problem occurs with the suspension system, this
message will appear on the DIC. If this message
appears, stop and turn off the vehicle. Restart the
vehicle and check for the message on the DIC display.
If the message is still displayed or appears again
when you begin driving, the air suspension system
needs service. See your GM dealer.

TIGHTEN FUEL CAP

If the vehicle's fuel cap is not tightened properly, this
message may appear along with the check engine light
on the instrument panel. See Malfunction Indicator
Lamp on page 3-44. Fully reinstall the fuel cap.
See Filling Your Tank on page 5-10. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. A loose or missing fuel cap will
allow fuel to evaporate into the atmosphere. A few
driving trips with the cap properly installed should turn
the light and message off.

TRACTION ACTIVE

When the traction control system had detected that any
of the vehicle's wheels are slipping, the traction
control system will activate and this message will appear
on the DIC. For more information, see Traction Assist
System (TAS) on page 4-8.
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