Chevrolet/GMC Silverado 1500 / Sierra/Sierra Denali 1500 Owner Manual
(GMNA-Localizing-MidEast-16515122) - 2023 - CRC - 8/12/22
Driving and Operating
243
Uplevel Shown, Other Models Similar
Caution
Do not lock the axle while the tires are
spinning. The vehicle drivetrain could be
damaged. The repairs would not be
covered by the vehicle warranty.
Caution
If the vehicle
’
s axle is locked while driving
on pavement, the drivetrain could be
damaged. Repairs would not be covered
by the vehicle warranty. Do not use the
locking axle on pavement.
Before the front axle can be locked, the
transfer case must be in 4
n
.
The front axle cannot be locked
independently of the rear axle.
To lock the front and rear axles:
1. Place the transfer case in 4
n
. This is the
only mode that allows the front axle to
lock. See
for
more information regarding the transfer
case and four-wheel drive low operation.
2. Press the front/rear axle locking switch
with the vehicle stopped.
3. Wait for the light in the switch to stop
flashing and remain illuminated to show
that the front axle is locked. Engagement
of the front axle lock will disable the
Antilock Brake System (ABS) and
illuminate the ABS warning light. Hill
Descent Control (HDC) will also be
disabled.
The locking front axle will be disengaged
when the vehicle speed exceeds 40 km/h
(25 mph) or the transfer case is shifted out
of 4
n
.
ABS will be automatically re-enabled and the
ABS warning light will turn off when the
locking front axle is disengaged.
If HDC was enabled prior to axle lock, it will
be automatically enabled when the locking
front axle is disengaged.
After pressing the switch to unlock the axle,
it may remain locked due to torque in the
driveline. The axle is more easily unlocked
by turning the steering wheel to the right
and to the left while traveling at a low
speed.
Cruise Control
{
Warning
Cruise control can be dangerous where
you cannot drive safely at a steady
speed. Do not use cruise control on
winding roads or in heavy traffic.
Cruise control can be dangerous on
slippery roads. On such roads, fast
changes in tire traction can cause
excessive wheel slip, and you could lose
control. Do not use cruise control on
slippery roads.
