Hard downshift on 2000 Dodge Grand Caravan 3.8 L recently added fluid had a small leak shifts smooth on the upshift.

Just a thought here ? thinking aloud and that is to check the vacumn pipe to the brake servo unit and make sure that their is no vacumn leaks anywhere in case its connected to the gearbox in some mannor or form i shouldnt think so on a 2007 as its all electronc controlled but it may have a vacumn controlled sensor and a vacumn loss would play it around if it has one that is which i doubt ?? iam more often wrong with my answers than right in regards to american vehicles ,now ask me about a albion or foden

your shifter cable is going bad.

Check for codes Before to do o think anything else.

the clutch is used and needs to be replaced

Most likely the second gear section of the transmission has gone bad. There are 3 or 4 different gear sections or assemblies in an automatic transmission, when they go bad, they go bad.

p0731 transmission shift problems
p0841 solinoid problems in the transmission
p0846 fluid level
p0700 solinoid stuck or sticking hard shifting
there is a solinoid in the transmission that shifts the trans and downshifts when stopping this is a problem you generally don't want to do your self

BELT INTACT?CHECK FOR LEAKS..P/S PUMP HOUSING MAY BE RUSTED OUT..STEERING RACK OR LINES MAY BE LEAKING..PUMP MAY HAVE QUIT PUMPING DUE TO LOW FLUID DAMAGING PUMP..I WOULD CHECK FOR LEAKS FIRST

have the car scanned for computer codes in the transmission section,most big name auto parts stores will do this for little or no charge, make sure they look for transmission codes. when you get these get back to me and we'll go from there,please rate my fix as i strive to be the best,don't leave negative feedback, just get back to me

check fluid level with engine running and in reverse with handbrake on and a chock under both drive wheels.is the gear shift slow or lazy??changing if so sounds like fluid if sharp change then problem could be with teh shift control switch or the control unit which is mounted under the passenger foot well.not a good position as often water get in and this is the sort of problem now that you get

If the transmission is the 3 speed auto,just Dexron 2 or 3.If it's the 4 speed overdrive trans,it should use Mopar fluid(buy at the dealer) that is highly friction modified,or use Dexron 2 or 3 and LubeGard highly friction modified fluid supplement.The worst that can happen if these fluids aren't used,is harsh shifting,sometimes upshift shudder,and downshift bumps.These symptoms really don't damage anything,but are extremely annoying.