Changed trans fluid in my TH400 and now it wants to slip and not get into gear. - The 1947 - Present Chevrolet & GMC Truck Message Board Network



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Changed trans fluid in my TH400 and now it wants to slip and not get into gear.

03-18-2026, 09:14 PM

#10

HeavyHauler

Registered User

Join Date: Nov 2011

Location: USA

Posts: 534

Re: Changed trans fluid in my TH400 and now it wants to slip and not get into gear.

Quote:

Originally Posted by Shifty One

Is it sucking air maybe (filter not tight or similar)

I did not mess with the filter.

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