That would be a 1 piece solid round rear main seal.
No need to remove oil pan on that deal. You must either pull the engine are transmission to replace the seal. One are the other your choice. That seal slides over the back of the crankshaft, And it will pop right out no problem. Just alot of work to get to it.
how do you change a rear main seal in a Chevy 350 motor
How do you change a rear main seal on a 2001 Chevy 2500 HD long bed
Remove transmission and replace the rear main seal
Yep, they have one. 1986 and older has a two piece rear main seal. 1987 and up has a one piece rear main seal.
rear main seal is the gasket around the crank between the rear of the motor and the transmission. front and rear main seals are usual spots for oil leaks.
The engine rear main seal can only be replaced with the engine or transmission out of the vehicle.
You must remove the transmission are engine to replace the rear main seal.
You either have to pull the engine or drop the transmission, which ever your more comfortable with.
You will have to pull the transmission out and remove the fly-wheel to inspect the rear main seal. It is a 1 piece round seal that slides over the rear of the crankshaft. If the rear main seal is leaking on that 2002, I would find that very odd.
You MUST remove the oil pan to change the rear main seal. It's the only way because it is a 2 piece seal that fits in the rear main cap and block.
The lip on the seal always goes towards the pressure are the fluid.
You will need to remove the transmission.