Hello on a 2003 chevy silverado pick up truck 4x4

If you are asking about the tin half round guard on the bottom of the flywheel or torque converter there should just be two sheet metal screws, one on each side and it will drop down.

its bolted under the bed near the fuel tank filler pipe they have changed designs several times so the new one will look different then the old one

ck the u joints 1st and your trans fluid

4WD with 6 lug nuts should be a single piston caliper. If for some reason you have a 8 bolt pattern the caliper will be a dual piston system. These should be limited to 3/4 4WD and 1 tons.

Hello
The fuel pump is elelctic and it is located inside the fuel tank, the fuel tank must be removed to service the fuel pump.

Short bed models have 26 gallon capacity and long bed models have 34 gallon capacity.

Here is a link to specs for that year model of truck, I would need more info such as auto/manual, and 4x4 or not. Anyway it's an easy chart to read. But technically speaking a 1/2 ton pickup is only rated to carry 1,000 lbs in the bed. I wouldn't personally suggest doing more than that, if you overload the bed you can have trouble steering and stopping. I hope this Helps please rate this thank you

try selecting from nutreul or less then 3km

If it sounds like a bird chirping, replace the universal joints.

There wont be a firing order on the dist cap , there might be a firing order stamped onto the intake manifold near usually infront of the throttle body.
to get the cap wiring you will need a manual, some auto store will print you off pictures of the cap firing order and cylinder numbering, just ask.