Noise Control System; Tampering With Noise Control System Prohibited - GMC T-Series 2007 Owner's Manual

3. To close the front panel, remove the prop rod,
close the panel and push firmly on both sides
to ensure that the panel is fully closed.
248
2. Then go to the front
of the vehicle and
lift the panel at
the center. Use the
prop rod to hold
the panel open.

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.