I need to know where are my spark plugs for 2006 cadillac srx v6

ck here

https://www.fixya.com/cars/t18863328-knock_sensor_location_cadillac_srx

Hi Amber,
I presume that you want to change the oil on the Cadillac. The link below will tell you how to change the oil, where the drain plug is and where the filler is a. It will tell you where the dipstick is.
Oil Filter Change Cadillac SRX 2004 2009 2006 Cadillac SRX 3 6L V6
This is a good, clear video.

You need the right disconnect tool. They are thin to get into the line disconnect. Auto parts stores have them.

if its the 3.6 v6 staring from the front of engine passenger side head is 123 driver side head is 456 if its the 4.6 v8 it is front head 2468 and back head is 1357 starting from the left to right

How do you change a cylinder? That's generally a major machine-shop overhaul on non-aircraft engines, and you should have serviced rings and bearings for all of the other cylinders as well. I assume you meant you did something else on Cylinder #1. Did you mean you changed the spark plug cable, or was it the fuel injector? Note: if you mixed up spark plug cables, you will have at least two plugs firing at the wrong time. This will make the engine run poorly, if it runs at all. Look for a sticker somewhere in the engine compartment showing the firing order, and verify that each cylinder's spark plug wire is connected to the corresponding terminal on the distributor or coil pack.

Hesitates after refueling, have someone check the FPR, Fuel Pump and Filter.
If you have junk in the tank, it will circulate when you add fuel to the system.

Hope this helps

remove the plastic center cover on the valve covers, carefully remove the coil and the spark plug is down inside the hole.

will have to see dealer to reset the computer after doing it.
the radio might not work if so then see dealer to reset.

it is on the passenger side of the pan, if you cannot find it, you are probably looking at the trans pan, the oil pan will not look like a normal pan, it will be square and aluminum with all kinds of diamond looking deep etches in it.