Yup, that's my biggest single problem with Chiltons/Haynes - "Let's print one book that covers a little bit of 10 years, 8 models, 6 engines, and 4 transmissions, but doesn't cover any of them worth a damn."
That's my next-biggest problem with them - C/H says "Take it to a mechanic". Factory manual says "To rebuild the automatic transmission in the start by..." and takes you through every step, wiggle, and sideways jog in the process from removal to reinstalling it.
The "last straw" for both is their piss-poor photography/drawings that either don't show jack s*it, or if they do, are zoomed so tight that you've got nothing for landmarks to figure out where the real-world incarnation of the bolt, screw, or piece that they're attempting to point out is actually located. Look at the picture, and it could be any of 50 bolts, located anywhere from the side of the engine, to under the carpet in the back seat floorpan, to somewhere deep in the guts of the transmission - But the picture doesn't give you any clue which one you actually want. Factory manual, on the other hand, usually has either drawings, photos, or both, complete with (a nod to Mr. Guthrie) "circles and lines and a paragraph on the back of each one describing the scene of the crime" that make it all but impossible for anybody but a blind man or a complete idiot (or maybe a completely blind idiot?) to miss "the right one".
I've said it before, and I'll say it again: Haynes/Chiltons = *JUNK* for anything non-trivial.
The factory manual for your specific vehicle model and year is the only way to fly.