2002 tahoe back of motor oil leak, already changed rear main

1995 Tracker would have a timing BELT. Normal oil leak points (in order) on a Suzuki G16 engine are the distributor base (rear of motor), valve cover (top of motor), front main seal (behind lower timing belt cog) cam seal (behind the upper timing belt cog) and rear main seal. (behind the flywheel). I'd suspect the front main seal or cam seal. I use foot power to help find oil leaks.

I would perform a coolant pressure test because these engines are known for leaking intake manifold gaskets.Check and see if your oil is starting to turn a creamy tan color.

Changing a rear main seal is a major repair. The transmission must be separated from the motor to get to it. The way you know a rear main seal is bad is that it will be leaking oil between the back of the engine and the front of the transmission. If it is not leaking oil, then leave it alone. If it is leaking then you have two options. Have some replace it by doing what I have just told you (call around, its probably pretty expensive). Or you can do what I would do, Just check your oil ALL the time and add oil when you need to. Put some cardboard under your car where the oil drips and leave it alone until you want to spend the money.

sounds like the rear main seal remove transmission or engine is the only way to fix this

this truck is equipped with an aluminum oil pan you could have 1 or several things going on... a stripped drain plug which is causing it to leak or it may be a leaking front seal or a rear main seal. If it is a front seal it is not to labor intensive. But if it is a rear main seal leaking it will require the transmission to be removed since the seal is a 1 piece rear main

you have several points to check!
the dip stick tube has a "O" ring seal at the bottom where it fits to tranny.
a reverse switch on tranny & the shifters selector shaft has a seal that may be leaking !
there are the cooler pipes from cooler to tranny [in & out] plus pump seal to the torque converter [leaks out between engine & tranny bellhousing] & then there are the drive shaft or shafts seals
so wipe it all clean & park it in a diffrent clean spot!
some will only leak when its runnung due to tranny,s internal pressure!

it has jumped off track to fix this you need to take the door panel off and put it back on track

I've had the same problem on other GM V6 motors. You need to have the rear main seal replaced to fix the leak. GM was notorius for oil leaks in those motors since the mid-80's and never did anything to fix the problem.

Two very likely sources for engine oil. You could have a valve cover leaking or a rear main seal. The best way to check is to trace the source of the oil. This requires a very thorough steam cleaning to remove all the old oil. Place an oil dye pack in the oil (about 3.50 at Napa and other parts stores). Run the engine for about 15 minutes and use a blacklight source and a mirror to check the back of the engine below the valve covers and closest to the firewall. Check out how the fresh oil floureces in the blacklight source by checking your dipstick for the color of the glow. If the back of the engine is dry and clean and your puddle is still glowing from between the engine and the transmission, you have a rear main seal and the transmission will need to be removed to change the seal. Spend the time on the diagnosis before you spend the money.

First of all why are you doing it? I am having an issue with my 02 Tahoe, 5.3, 4wd, that mainly when turning left, at any speed, usually when not on the gas, it is hard to turn. Feather the gas, and all is fine. Does occur to the right sometimes, but not as noticeable. I did order an new pump, and am changing it Friday night, Jan 2. I will let you know if you did not already complete.