Yes, you need GM-style fuel quick disconnect tools. One size fits the outlet line, another size fits the return line. I got mine at Advance Auto parts. Do not get the combination tool with both sizes on the same tool. This will work on a GM truck, but not on a car. Don't know why, it just is.
The o2 sensors screw in. There is a special socket for removing the 02 sensors with a slot in the side to clear the wiring.
several special tools are REQUIRED to perform this task, which involves removing the steering wheel.
The answer to this is too complex and you need special tools...sorry..Rick D
To replace spark plugs, you can use a socket wrench, but a socket made for removing and replacing spark plugs is needed. This socket is relatively inexpensive and can be found at most auto parts stores.
removing them, no, installing them, yes
It will be a special tool that you'll need. Check with O'riely or a dealer.
shearing
You didn't say what year you have but, later models require removing the door panel, disconnecting the wire harness, removing the detent spring and drive out the two hinge pins. The spring will need a special tool to replace. You don't want to replace the hinges unless you have no choice. The original hinges are welded in to the door and the cab. They can be replaced but it is a expensive job. In most cases you can replace the hinge pins and bushings to restore the hinges back to normal. The pins and bushings are available at your local auto parts store.
You will need to buy a manual, since this is a complex procedure that would take many pages to explain. Removing the crank pulley will require special tools that the average mechanic may not have.
The pump is in the tank so get as much fuel out as possible then drop the tank after removing the hoses and wires. Use a special tool to remove the sending unit and pump assy.
You will need a special tool to release the locks for removing the filter. Your local auto parts store will have it probably in stock for purchase or rent. Note, be aware fuel system will be under pressure.
Locate screws, removing panels if necessary. Disconnect wiring, remove item. Replace. Reconect, relocate and recover. That gos for house, car or boat. Ufo's might require special tools or skill! Bear in mind, use the best quality correct fitting tools as you go