The shower diverter is loose or broken inside and needs to be changed.
The aisle seat is inside, window seat outside.
If you are simply replacing the inside parts of the diverter, then you do it just by unscrewing the cap under the handle and pulling out the main ball. If you cannot get the same parts,which may happen if it's old, then you will have to fit an entire new diverter. If you are removing the entire diverter then you must remove enough of the tile etc, and wall to expose all connections. I have done a few and generally cut all 4 pipes about 6" away from the diverter. I then fit the new diverter in place and make the pipes meet the diverter with short sections of PEX joined to the old pipes with brass compression fittings, and to the diverter with PEX MIP fittings.. Test thoroughly before restoring any parts of the wall. Once you are certain it all works perfectly you can restore the wall and tiles.
NO - you would have to change valve out
It is possible that a piece of the rubber washer or some material has slightly plugged it in the diverter.
It's usually due to a combination of two things: back pressure from the shower head, aggravated by the newer low-flow shower heads, acting against a slight leak at the diverter valve. I find that it gets worse after I've been away for a few days and assume that there's scale build-up in both places... the shower head and the diverter. You can try using a descaling solution on the shower head and/or checking that the diverter valve is seating properly and possibly greasing its seat with some silicone grease.
Depending where is has broken off, depends to what extent of how much you will have to replace, but worse case scenario is, inside there is a cartridge that has a little lever that the diverter handle attaches too. This whole cartridge needs to be replaced. Depending on the make, it can be costly.
Along the inside of the frame, under the driver seat area.Along the inside of the frame, under the driver seat area.
the diverter knob is either stripped or the diverter itself itself may be broken turn the water supply off take the knob off a carefully remove the diverter shaft if the flapper is missing look inside the housing for the broken piece then take the name and model down to home depot or similar home store and someone will be able to match it up,. but my money is on the stripped knob
You possibly refitted something the wrong way.
Where is diverter that controls air direction located in a 2004 Chevy S10 Blazer?
You can alter it by the dials on the inside edge of the seat