Quote:
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
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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