Yes, if the nuts are loose. If so, replace them with new ones as these are not reusable nuts.
loose or missing torque converter bolt to the flywheel
the knock could coe from a few places, if it is in fact a "knock" it could be a piston rod, if its more of a tapping comming from the top of the motor you could have a loose rocker arm, if it is a loose rocker arm i would suggest tightening them up if it stops and comes back i would replace the lifters
no
A loose timing chain can cause the 305 h to jump time. with improper time, the engine will not start.
The knocking could be from loose brake pads, loose wheel nuts, tie rod ends, or ball joints. Depending on the severity of the "knock" ( Pads usually "clack") If the knock is from the back the same applies (kinda)
Low fuel pressure
There are several things that can cause your 2004 Chevy Trailblazer headlights to keep going out. The most common cause is a loose or corroded ground wire.
There are several things that can cause your day time running the light relay switch to malfunction in your 2001 Chevy. The most common cause is a loose or corroded ground wire.
the loose particles blown by the wind may knock against other objects and cause erosion
cracked or warped flywheel Spring on the pressure plate could have come loose.
Probably either the sending unit or a loose connection.
You have a fuel leak somewhere. Look for loose connections or bad hose.