GMC C series 2002 Owner's Manual page 256

Then, follow the steps below for the wheels you have.
CAUTION:
Never use oil or grease on studs or the threads of
the wheel nuts. If you do, the nuts might come
loose. Your wheel could fall off, causing a crash.
- -
Hub Piloted Wheels, 8 Hole or 10
The studs and nuts used with these wheels have
-
right hand threads.
1. With intermittent pilot pads, position a pad at
12 o'clock to center the wheel and reduce run
2. Put the tire and rim assembly on the axle hub.
3. Put on the wheel nuts.
4. Finger
-
Hole
-
out.
Install the outer rear tire and rim assembly so that
its valve stem is exactly opposite the valve stem on
the inner tire and rim assembly.
-
tighten the nuts.
5. Oil the surfaces between
the nuts and washers as
shown. Do not oil the
studs or the threads of
the nut.
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