All true except it's near impossible to get to all the transmission mounts. I was just messing with mine trying to get the old TV cable out to put a newer, longer one in and couldn't get to the bolt that holds the trans dipstick. Resorted to cutting the old one and putting the new one over the dipstick since I had space to spare now.
This is a stumbling block for many who don't do this all the time. Surprisingly, the solution is odd but simple. I use a long, (30" or longer) extension and an impact style universal socket. Personally, I prefer 3/8" extension and socket, but any will generally work. The bolts all have a 9/16" head, but on occasion you'll find a stud with a 9/16" nut on it when you're dealing with automatic, longitudinal GM transmissions.
And yeah!! The one on the dipstick tube is usually a little more difficult. I seldom remove it all of the way. I'll just back it out of the engine block and let it hold the dipstick tube in place!!
You'll also find that on the inline 4 and 6 engines, you can often unbolt the bell housing bolts from the top, reaching behind the engine from the top.
