2000 dodge cummings diesel 5 speed changed the brakes and now the clutch travels 1/2 way and its hard to shift into gears. What is going on and how do I fix it

is your clutch pedal soft? If so you could have a slave cylinder leaking or maybe just in the the system bleed back up. Might be that the clutch drive disc is burned up making it hard to shift

it sounds like your clutch is starting to go out, or the clutch slave cylinder is going bad, you will have to have a auto shop check it out

how many miles on it? how does the clutch pedal feel? how old is the clutch?

DTC P0736 - Reverse incorrect gear ratio

The clutch pressure control (PC) solenoid 2 flows fluid to the 3-5-R clutch when commanded OFF and exhausts fluid when commanded ON. The clutch PC solenoid 2 regulates the transmission fluid pressure to the 3-5-R clutch. The transmission fluid pressure (TFP) switch 1 Opens (High) under fluid pressure and closes (Low) when no pressure is present. The transmission control module (TCM) calculates gear ratio based on data from the automatic transmission input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the known transmission gear ratio to a calculated gear ratio for each commanded gear.

Circuit/System Verification:
Operate the vehicle to induce a shift from second to third gear while observing TFP Switch 1. Perform this action 2 times. The TFP Switch 1 should change states from Low to High. If the TFP Switch does not change states and no other DTCs set, replace the control solenoid (w/body and TCM) valve assembly. If any other DTCs set, diagnose that DTC first.
Operate the vehicle to obtain sixth gear 2 times and then check for DTCs other than DTC P0736.If any other DTCs set, diagnose that DTC first. If no other DTC sets, continue on with diagnostics.
Operate the vehicle by shifting from Park to Reverse, then while in reverse, operate the vehicle with the calculated throttle position greater than 8% for 5 seconds, perform this maneuver a minimum of 3 times. If the DTC P0736 resets, go to Component Testing.

Component Testing:
Perform the line test procedure.
Inspect the check ball 5 for possible sticking or damage. If you found a concern with this check ball, repair the concern.
Inspect the shift select valve 3 for sticking or damage. If you found a concern with the shift select valve 3, repair or replace the valve or valve body.
Inspect the R-1 (Low and Reverse clutch) assembly for wear or damage. If you found a R-1 assembly concern, repair or replace the R-1 assembly as necessary.

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Try some tranX. My transmission would drop out from 2nd and 3rd , I put this in and with in 3 days it quit slipping. and shifted normally. It's been over 2 years now without a problem

I am going through this now my 2000 ram 3500 always had a problem with reverse

I chocked it up to a quirk of the transmission! But my mechanic found out that they only placed this trans in late 1999 and early 2000 trucks first years the 6 speed was offered. It comes with a smaller clutch and synchronizer that are no longer available unless you find a dealer with old stock sitting on a shelf. I am having to updated my cultch and am having to replace the gears that will allow the new type synchronizer to work this in just a about ½ the price of a new transmission BOHICA/FUBAR

So just get ready for a shock if you need to replace synchronizer rings

ok starting where you did... on the side of the transmission itself there will be a 1/2 inch socketed plug that can be undone to add gear oil there will be another on the bottom that can be used to drain the oil. for clutch master, standard brake fluid can be used and is recommended. the causes is most likely low fluid or worn out syncros in the tranny.. check the level of fluid in the clutch system and fill and bleed system at the slave cylinder. after that check fluid in the tranny. if all there is fine then i would recommend bringing it to a trans shop for diagnosis. if the syncros are going out then you will be looking to spend between 750 and 1500 to have it rebuilt or 2000+ for a new trans

you have what is known as an open diff. or worn out clutch packs in a limited slip. most makers put in a open diff because its cheaper and handles better. if you did not pay for it on your invoice your stuck with stock unless you put it in your self.

if master cylinder and slave cylinder.is good and have brake fluid is in system and no leaks.problem is in the clutch and pressure plate.

your mechanic is right coz there might be a problem with your 2nd or 3rd gear.