Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 5/6/16
Driving and Operating 337
pickups. Trailer pin box extensionsand sliding fifth-wheel hitchassemblies can help this condition.There should be at least 15 cm (6 in)of clearance between the top of thepickup box and the bottom of thetrailer shelf that extends overthe box.
Safety Chains
Always attach chains between thevehicle and the trailer. Cross thesafety chains under the tongue ofthe trailer to help prevent the tonguefrom contacting the road if itbecomes separated from the hitch.Instructions about safety chainsmay be provided by the hitchmanufacturer or by the trailermanufacturer. If the trailer beingtowed weighs up to 2 271 kg(5,000 lb) with a factory-installedstep bumper, safety chains may beattached to the attaching points onthe bumper; otherwise, safetychains should be attached to holeson the trailer hitch platform. Alwaysleave just enough slack so thecombination can turn. Never allowsafety chains to drag on the ground.
Trailer Brakes
Aloadedtrailerthatweighsmorethan 900 kg (2,000 lb) must beequipped with its own brake system,with brakes working on all axles.Trailer braking equipmentconforming to Canadian StandardsAssociation (CSA) requirementCAN3-D313, or its equivalent, isrecommended.
State and local regulations may alsorequire the trailer to have its ownbraking system if loaded above acertain threshold.
Be sure to read and follow theinstructions for the trailer brakes sothey are installed, adjusted, andmaintained properly.
Do not tap into the vehicle'shydraulic brake system.
Auxiliary Battery
The auxiliary battery provision canbe used to supply electrical powerto additional equipment that may beadded, such as a slide-in camper.If equipped, this relay will be on thedriver side of the vehicle, next to theunderhood electrical center.
Be sure to follow the properinstallation instructions included withany electrical equipment that isinstalled.
Caution
Leaving electrical equipment on
for extended periods will drain the
battery. Always turn off electrical
equipment when not in use and
do not use equipment that
exceeds the maximum amperage
rating of 30 amps for the auxiliary
battery provision.
Trailer Wiring Harness
The vehicle is equipped with one ofthe following wiring harnesses fortowing a trailer or hauling a slide-incamper.
Basic Trailer Wiring
All regular, double cab, and crewcab pickups have a seven-wiretrailer towing harness.
Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Vehicle Care 419
Some aluminum wheels can berepaired. See your dealer if any ofthese conditions exist.
Yo u r d e a l e r w i l l k n o w t h e k i n d o fwheel that is needed.
Each new wheel should have thesame load-carrying capacity,diameter, width, offset and bemounted the same way as the one itreplaces.
Replace wheels, wheel bolts, wheelnuts, or Tire Pressure MonitorSystem (TPMS) sensors with newGM original equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
acrash.Alwaysusethecorrect
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Whenever a wheel, wheel bolt,or wheel nut is replaced on a dualwheel setup, check the wheel nuttorque after 160,1 600, and10 000 km (100,1,000, and6,000 mi) of driving. For propertorque, see“Wheel Nut Torque”underCapacities andSpecifications0468.
SeeIf a Tire Goes Flat0420formore information.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
If the vehicle has dual wheels or
265/65R18, P265/65R18,
P275/55R20, LT265/70R17,
LT 2 6 5 / 7 0 R 1 8 , LT 2 6 5 / 6 0 R 2 0 ,
LT 2 7 5 / 6 5 R 1 8 , P 2 8 5 / 5 0 R 2 0 ,
285/45R22, or P285/45R22 size
tires, do not use tire chains. They
can damage the vehicle because
there is not enough clearance.
Tire chains used on a vehicle
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