Noise Control System; Starter Switch Check - Chevrolet Silverado 4500HD 2022 Owner's Manual

290 Vehicle Care

Noise Control System

Noise Emissions Warranty
General Motors warrants to the first person
who purchases this vehicle for purposes
other than resale and to each subsequent
purchaser that this vehicle as manufactured
by General Motors, was designed, built and
equipped to conform at the time it left
General Motors s control with all applicable
U.S. EPA Noise Control Regulations. This
warranty covers this vehicle as designed,
built and equipped by General Motors, and
is not limited to any particular part,
component or system of the vehicle
manufactured by General Motors. Defects in
design, assembly or in any part, component
or system of the vehicle as manufactured by
General Motors, which, at the time it left
General Motors s control, caused noise
emissions to exceed Federal standards, are
covered by this warranty for the life of the
vehicle.
The following information relates to
compliance with federal noise emission
standards for vehicles with a Gross Vehicle
Weight Rating (GVWR) of more than
4 536 kg (10,000 lb). The Maintenance
Schedule provides information on
maintaining the noise control system to
minimize degradation of the noise emission
control system during the life of the vehicle.
The noise control system warranty is given
in the warranty manual.
These standards apply only to vehicles sold
in the United States.
TAMPERING WITH NOISE CONTROL
SYSTEM PROHIBITED
Federal law prohibits the following acts or
the causing thereof:
1. The removal or rendering inoperative by
any person, other than for purposes of
maintenance, repair, or replacement, of
any device or element of design
incorporated into any new vehicle for
the purpose of noise control prior to its
sale or delivery to the ultimate purchaser
or while it is in use; or
2. The use of the vehicle after such device
or element of design has been removed
or rendered inoperative by any person.
Among those acts presumed to constitute
tampering are the acts listed below.
Insulation:
Removal of the noise shields or any
underhood insulation.
Engine:
Removal or rendering the engine speed
governor, if equipped, inoperative so as to
allow engine speed to exceed manufacturer
specifications.
Fan and Drive:
Removal of the fan clutch, if equipped,
or rendering the clutch inoperative.
Removal of the fan shroud, if equipped.
Air Intake:
Removal of the air cleaner silencer.
Modification of the air cleaner.
Exhaust:
Removal of the muffler and/or resonator.
Removal of the exhaust pipes and exhaust
pipe clamps.

Starter Switch Check

Neutral Safety Switch
Check the operation of the transmission
neutral safety switch. Try to start the
vehicle in all shift selector positions. The
starter should only operate when the shift
selector is in Neutral or Park.