Front Axle Locking Feature - Chevrolet SUBURBAN 1993 Owner's Manual

Features & Contmls
N (Neutral): Shift to this setting only when your vehicle needs to be towed or
when using a power take off.
4L (Low): This setting also engages your front axle to give you extra traction,
but should be used only for off-road or on extremely slippery surfaces.
You can shift from 2H to 4H or from 4H to 2H while the vehicle is moving.
Your front axle will engage faster if you take your foot
off of the accelerator
for a few seconds after you shift. In extremely cold weather it may be
necessary to stop or slow the vehicle to shift out of 2H.
To shift into or out of 4L or N (Neutral):
1. Slow the vehicle to a roll, about 3 mph
(5
km/h) and shift your
transmission into neutral.
2. Shift the transfer case shift lever in one continuous motion.
Don't pause in N (Neutral) as you shift the transfer case into 4L, or your
gears could clash.
Remember that driving in
4H or 4L may reduce fuel economy. Also, driving in
four-wheel drive on dry pavement could cause your tires to wear faster and
make your transfer case harder to shift.
Front Axle Locking Feature
The front axle locks and unlocks automatically when you shift the transfer
case. A slight delay for the axle to lock or unlock is normal. If the outside
temperature is very hot, or the vehicle has been used under hard driving
conditions, there may be a slight delay for the axle to unlock.
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