Every truck is different, based on order specs and age of unit.So this is just a start.....
You will have(going from memory as I owned a 2000 Peterbilt 379L about 15-17yrs ago):
1 or 2 on each brake s-cam tube(each wheel)
1 on each brake slack adjuster(each wheel)
2 front leaf spring shackle pins (rear of front leaf) each side
1 front spring pin(front of front leaf spring, right behind bumper)each side
1 output shaft of steering box
3 on steering shaft under hood (2 u-joints plus slip joint)
2 on drag link
2 tie rod ends
steering king pins
driveshaft u-joints and slip joints
clutch throwout bearing(may either be hanging through inspection cover on bottom of flywheel housing or hose routed to group of grease zerks behind drivers side spring shackle)- do not over grease as this will contaminate your clutch brake making it not work.
mechanical clutch linkage (inside frame under cab or hosed to group of grease zerks mentioned above)- only needs one shot per zerk
hood hinges (if I recall correctly)
Possibly engine fan clutch (yours should be new enough to be sealed for life)
You may have more or less than what I have listed. For example it may have been ordered with Lubed For Life Driveline, which would eliminate u-joint and slip joint lube requirements.