No
I assume you mean to ask how difficult it is to change the main bearings WITHOUT pulling the engine out of the vehicle. Don't bother. To properly replace the main bearings you need to pull the crankshaft away from the engine far enough to be able to put a micrometer on the bearing surfaces of the crankshaft. To do that you need to disconnect the crankshaft from the transmission AND pull the pistons part way out. Also, depending on the type of seal used, many rear main seals must be replaced by pressing them into place after the crankshaft is in. Don't even try to replace bearings without first verifying the status of the crankshaft. It must be round and within tolerance. If the old bearings have worn there isn't much chance that the crankshaft hasn't been affected.
remove pump with line then change and reistall
i think you can replace the seal by removing the rubber shift boot
Remove the trasnsmission and you can then replace the seal.
Yes, the crossmember for suspension is in front of the engine. Very easy job.
NO you can replace it without I't's just a 10 mm head bolt but you will need pliers or a screwdriver to "help" the sensor out The "O" ring will be tight
Not without modification
A tracker list on the internet is used to find out what different websites a person is visiting. Most of the time is it used without the person's permission and installed without knowledge or permission.
Disconnect the battery and remove the fan assembly and crankshaft belts. Remove the center bolt from the pulley and use a crankshaft pulley remover to pull off the pulley. You can usually borrow one from an auto parts store.
put the car in drive and crankshaft wont turn anymore. then you can take off the bolt
located ot the lower front of engine above motor mount 2 of them very tough job without a lift
again the tow capacity for a 4x4 2002 Chevy tracker is 1500lbs but you should not tow anything without a transmission cooling system which you can purchase from your local uhaul company, if you tow with your tracker without the cooling system you will fry your transmission and damage your transfer case.