Chevrolet EXPRESS - 2011 Manual page 305

Refer to the Maintenance Schedule
to determine how often to check
the lubricant. See
To get an accurate reading, the
vehicle should be on a level
surface.
If you have the 1500 Series, the
proper level is from 15 mm (5/8 in) to
40 mm (1 5/8 in) below the bottom of
the fill plug hole. The proper level
for the 2500 and 3500 Series is
from 0 to 6 mm (1/4 in) below
the bottom of the fill plug hole.
.
Add only enough fluid to reach
the proper level.
Refer to
determine what kind of
lubricant to use.
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 lbs).
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 vehicle
warranty booklet.
These standards apply only to
vehicles sold in the United States.
Federal law prohibits the following
acts or the causing thereof:
to
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.