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If you press the TC button once, the traction control
system will turn off and a TRAC OFF message
will appear on the DIC. Press the TC button again to
turn the system back on. The TRAC OFF message will
then go off. The traction control system will reset
itself at each ignition cycle. If your vehicle also has
StabiliTrak
®
, see StabiliTrak
®
System (Automatic
Transmission) on page 4-11 for more information.
Adding non-GM accessories can affect your vehicle’s
performance. See Accessories and Modifications
on page 5-3 for more information.
Locking Rear Axle
Your vehicle may have this feature. The locking rear axle
can give your vehicle additional traction from the rear
wheels when traveling in off-road situations such as mud,
snow, sand, steep hills and uneven terrain.
The button used to turn
this feature on or off is
located to the right of the
transfer case buttons
on the center of the
instrument panel.
To lock the rear axle, do the following:
1. Place the transfer case in the 4LO Lock mode.
This is the only mode which will allow the rear
axle to lock. See Full-Time Four-Wheel Drive
on page 2-22 for more information regarding the
transfer case and 4LO Lock mode.
2. Press the button with the vehicle stopped or moving
less than 2 mph (3 km/h).
You must wait for the light in the button to stop flashing
and remain illuminated before the rear axle is locked.
Notice: If you try to lock the rear axle while
your vehicle is stuck and the tires are spinning,
you could damage your vehicle’s drivetrain.
The repairs would not be covered by your warranty.
Always lock the rear axle before attempting
situations and/or navigating terrain which could
possibly cause the vehicle to become stuck.
The locking rear axle will be disengaged when the
wheel speed is greater than 20 mph (32 km/h), if the
vehicle’s battery is low and/or the transfer case is
shifted out of 4LO Lock mode.
Notice: If you lock the rear axle while driving
on pavement, you could damage your vehicle’s
drivetrain. The repairs would not be covered by
your warranty. Do not use the locking rear axle
on pavement. If you need four-wheel drive when
traveling on pavement, use only 4HI.
4-10