tranny hard shift

[JOE RIV 1]

I have a 04 2500 hd w 6.0 4l80e trans. it just started to shift hard into 2nd all other gears are fine.did a fluid change and its the same.no no dummy lite and no codes.Thanks for some input. joe riv

[MT-2500]

Originally Posted by JOE RIV 1

I have a 04 2500 hd w 6.0 4l80e trans. it just started to shift hard into 2nd all other gears are fine.did a fluid change and its the same.no no dummy lite and no codes.Thanks for some input. joe riv

You need to get it on a transmission/engine capable scanner and read out transmission shift data and engine data.
Post back any codes from a good scanner check

[JOE RIV 1]

thanks for the responce.im trying to set the scan up with out getting taken.

[JOE RIV 1]

had my gm buddy check it with his scan tool and nothing came up. all shift points are all good. now what? some times its good and sometimes when i give it gas it bangs hard.MORE HELP PLEASE!

[MT-2500]

It could be a engine running or a tramsmission problem.

When it gives you a hard shift is the time to ckeck it out.

A good engine/transmission capable scanner and a good tech/mechanic should be able to spot and show the problem.


Also it should be setting a code past present or history.