GMC 2003 Sierra - Manual (Page 123)

An 4WD Incficator lighi will
ihurnlnale when you shift
into four-wheel drive
and the frgni aifle engages.
Some delay belween ahifling and the indicator's lighlirg
is normal.
Recommended Transfer Case Settings
Transfer Case
Settlings
N Driving Corrdillons 2HI 4HI 4LO
Norrnal YES
Severe YES
Extreme YES
Vehide in Tow* YES
'See iiecjTeaiidrta/ V^hidc Tdwrng on
page 4-53 or Toeing Your Vef^icte
page 4-53 for further Inlormatron.
An indicator on the bo^el near the lever shows you the
transfer case settings:
2-Wheet High i2HI): This setling is used for driving in
most street and highway situations- Your Ironl axle
is nal engaged In twa-wheel drive. This setting
also provides the hast fuel economy,
4^Wheel High HI};; Use 4HI when you need extra
iraclion, such as on snowy or icy roads or in mosl
oEt'foad situations. This setting also engages your fron-t
axle Id help drive your vehicle This is The hesf setting
to use when plowing snow.
Shifting the trarisfer case to NEUTRAL cen
cause your vehicle to roll even if the
transrriiEsion is in PARK (P||^ Or If you have a
manual transmission^ even If you are In gear.
You or someone else could be seriously
injured. 8e sure to set the parking brake
before placing Ihe transfer case in NEUTRAL.
See "Parking Braka'^ in the Index.
2-Э6