Gmc 2007 Sierra User Manual download pdf (Page 531)

Noise Control System

Tampering with Noise Control

System Prohibited

The following information relates to compliance

with federal noise emission standards for vehicles

with a Gross Vehicle Weight Rating (GVWR) of

more than 10,000 lbs (4 536 kg). The Maintenance

Schedule provides information on maintaining

the noise control system to minimize degradation

of the noise emission control system during

the life of your vehicle. The noise control system

warranty is given in your warranty booklet.

These standards apply only to vehicles sold in the

United States.

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 engine speed governor,

if the vehicle has one, inoperative so as to

allow engine speed to exceed manufacturer

speciﬁcations.

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