Manual Transmission - GMC C series 2002 Owner's Manual

Manual Transmission

When the knob is up, the rear axle is in the high range.
Push it down to get the low range.
-
The two speed axle should be in low when you park the
vehicle. You'll need to engage the transmission, even
move the vehicle a little, to be sure the axle is in the low
range. Then apply the parking brake, shift into neutral
and shut off the engine.
Also, always start the vehicle in motion with the
-
two speed axle in the low range. When you upshift the
rear axle from low to high, move the switch up for the
high range, disengage the clutch, pause, engage the
clutch and then press down on the accelerator. When
you shift the axle down from high to low, you don't
have to clutch. Just move the switch down to low,
release the accelerator and then quickly apply it again.
The knob for the rear
axle shift control is on the
shift lever.
Air Shift Control
(Manual Transmissions Only)
When the lever is moved to HI, the rear axle will be in
the high range. Switch it to LOW to get the low range.
-
The two speed axle should be in LOW when you park
the vehicle.
You'll need to engage the transmission, even moving the
vehicle a little, to be sure the axle is in the low range.
Then apply the parking brake, shift into neutral and shut
off the engine.
The lever for the rear axle
shift control is either at the
lower right corner of the
instrument panel or on the
shift lever.
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