Locking Rear Axle (If Equipped); Four-Wheel Drive (If Equipped) - GMC SIERRA 1997 Manual

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Up Shift Light
SHIFT
If you have a manual
transmission, you may have
a SHIFT light. This light
will show you when to shift
to the next higher gear for
best fuel economy.
When this light comes on, you can shift to the next
higher gear if weather, road and traffic conditions let
you. For the best fuel economy, accelerate slowly and
shift when the light comes on.
While you accelerate, it is normal for the light to go
on and off if you quickly change the position of the
accelerator. Ignore the SHIFT light when you downshift.
If your vehicle has four-wheel drive and is equipped
with a manual transmission, disregard the SHIFT light
when the transfer case is in 4L.
Locking Rear Axle (If Equipped)
If you have this feature, your rear axle can give you
additional traction on snow, mud, ice, sand
or
gravel. It
works like a standard axle most of the time, but when
one of the rear wheels has no traction and the other
does,
the locking feature will allow the wheel with traction to
move the vehicle.
Four-wheel Drive (If Equipped)
If your vehicle has four-wheel drive, you can send your
engine's driving power to all four wheels for extra
traction. To get the most satisfaction out of four-wheel
drive, you must be familiar with its operation. Read the
part that follows before using four-wheel drive. You
should use 2-WHEEL
HIGH (2H)
for most normal
driving conditions.
I
NOTICE:
I
Driving in the 4-WHEEL HIGH (4H) or
4-WHEEL LOW (4L) positions for a long time
on dry or wet pavement could shorten the life
of
your vehicle's drivetrain.
2-22

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