Chevrolet 2004 Blazer Owner's Manual page 98

AUTO 4WD (Automatic Four-Wheel Drive): This
setting is ideal for use when road conditions are
variable. While driving your vehicle in AUTO 4WD, the
front axle is engaged, but the vehicle's power is
sent only to the rear wheels. When the vehicle senses a
loss of traction, the system will automatically engage
four-wheel drive. Driving in this mode results in slightly
lower fuel economy than 2HI.
4HI (Four-Wheel High): Use 4HI when you need extra
traction, such as on snowy or icy roads or in most
off-road situations. This setting also engages your front
axle to help drive your vehicle.
4LO (Four-Wheel Low): This setting also engages
your front axle and delivers extra torque. You may never
need 4LO. It sends maximum power to all four wheels.
You might choose 4LO if you are driving off-road in
deep sand, deep mud, deep snow and climbing
or descending steep hills.
CAUTION:
{
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the
transmission is in PARK (P). You or someone
2-32
CAUTION: (Continued)
CAUTION: (Continued)
else could be seriously injured. Be sure to set
the parking brake before placing the transfer
case in NEUTRAL. See Parking Brake on
page 2-35.
NEUTRAL: Shift the vehicle's transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-46 or Towing
Your Vehicle on page 4-46 for more information.
Indicator lights in the buttons show which setting you
are in. The indicator lights will come on briefly when you
turn on the ignition and one will stay on. If the lights
do not come on, you should take your vehicle to your
dealer for service. An indicator light will flash while
shifting the transfer case. It will remain illuminated when
the shift is complete. If for some reason the transfer
case cannot make a requested shift, it will return to the
last chosen setting.
If the SERVICE 4WD light stays on, you should take
your vehicle to your dealer for service. See Service
Four-Wheel Drive Warning Light on page 3-34 for further
information.