Chevrolet 1998 Tracker Owner's Manual page 80

You can shift from TWO-WHEEL HIGH (2H) to
FOUR-WHEEL HIGH (4H) or from FOUR-WHEEL
HIGH (4H) to TWO-WHEEL HIGH (2H) at any speed
if your hubs
are
locked and your wheels are straight
ahead. Your front axle will engage faster if you take
your foot off the accelerator pedal for a
few seconds
as you shift.
Shifting Into or Out of FOUR-WHEEL LOW (4L)
1. Stop your vehicle and shift your transmission to
2. Shift the transfer case in one continuous motion.
NEUTRAL (N).
Parking Brake
Don't pause in
NEUTRAL (N) as you shift into
FOUR-WHEEL HIGH (4H), or your gears could clash.
To set the parking brake, hold the brake pedal down and
pull up on the parking brake lever. If the ignition is on,
the brake system warning light will come on.
2-21