Np241 shifting question.

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Chevyguy78

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Why is it that when I shift from 4 low though N to 2Hi it grinds? the tranny is in N and foot on the break any help would be awsome.
 

SkyHighColorado

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Going from N to 4L will make a grinding noise and from what I understand this is normal. I think you can turn your truck off and put the shifter in 4L and then start back up without grinding if it bothers you a lot. I shift from 2h to 4h while rolling and if I dont pull the shifter firm enough it will grind, but other than that its more of a thud then a grind.

I guess the reason for the grinding is because the Trans case is locking up, once it locks no more grinding.

When was the last time you changed the TC fluid? its easy. 2.25 quarts atf.
 
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