Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000mi.Have underbody flushing service performed. See "Underbody Maintenance" inExterior Care.
Power Mode Description and Operation
GMLAN and Media Oriented Systems Transport (MOST) Wiring RepairsCruise Control
: Press to turn the cruise
control
system on and off. A white indicator
comes on in the instrument cluster
when cruise is turned on.
: Press to disengage cruise
control without erasing the set
speed from memory.
+RES : If there is a set speed in
memory, press to resume that
spee ...