GMC 2003 Sierra - Manual (Page 218)

SERVICE 4 WHEEL STEER SERVICE RIDE CONTROL
If a probfem occurs [he 4 wheel steer system, this
message will appear or the DIG. IT this tressage
appears, slop as spon as possible, and turn off Ihe
vehicle. Reslart the vehicle and check ior (ite message
on The piC display. If Ihe message is stiit displayed,
□r appears again when you being driving^ the four wheel
steer system needs service.
SERVICE 4WD
If a problem occurs wilh the four wlieel drive system,
this message wilt appear on the DIC. IF this message
appears, stop as soon as possible and lum off the
vehicle. Restart the vehicle and check For the message
on ihe DFC display. If the message Is sllll displayed,
Of appears again when you begin driving, the four wheei
drive sysEem needs service.
It a proptem occurs wUh the suspension sysfem, this
message will appear on The DIG. If this message
appears, stop and turn off Ihe vehicle. Restart the
vehicle anti checii For the message on the DIC display.
If The message is stilt displayed, or appaara again
when you begin driving, the air susperisioo system
needs service.
TURN SIGNAL ON
IF a lurn signal is left on for 3/4 oF a miJe (1.2 km)^ this
messaga will appear on Hie display and you will hear a
chime. F\ít>ve the lum signal/multifundion lever to the off
position. Pressing the seled button will achnOWiedge thJs
message and clear If from the DIC display.
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