<https://www.allpar.com/threads/2000-chrysler-300m-transmission-shifting.151077/>
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"The  2000 300M with 182,000 miles is shifting a bit funny.\n\nit is shifting a bit odd. 1st to 2nd is sometimes ok and sometimes intermittent with a bit of an extra 'bump\" in the shift. not a shudder but a little hickup in the shift. 2nd to 3rd is smooth. 3rd to 4th always is a bit harsh and has a bit of an engine rev before it engages.\n\nJust changed fluid and filter. Nothing unusual in trans, not burnt,  but was pretty grey/black and a good bit of fuzz on the magnet.\n\nPut in 1/2 Mopar ATF+4 and 1/2 Amsoil ATF as i've done on all of my Chryslers for years but it didn't change anything.\n\nNo codes show up.    Haven't been able  to check the CVIs.  Can those be checked with a scan tool in the car? \n\nAny thoughts on what might be going on?\n\nThanks."
<https://www.allpar.com/threads/2000-chrysler-300m-transmission-shifting.151077/>