When turning transmission downshifts

[88gmt400]

Just what it says I can be goin sown the road and take a curve and the truck will kick down in passing gear? I put a radiator in and lost a little tyranny fluid but could that be the problem I checked it three times and it is still full

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[thz71]

That should have absolutely nothing to do with each other

 

[88gmt400]

Any ideas?

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[michael hurd]

Is it an older truck with a mechanical linkage on the side of the transmission? It may be the cab is twisting on the frame ( think missing / corroded cab mount bolt ) or possibly broken / rust damaged frame causing the trans linkage to move enough to drop a gear.

 

[thz71]

Is it an older truck with a mechanical linkage on the side of the transmission? It may be the cab is twisting on the frame ( think missing / corroded cab mount bolt ) or possibly broken / rust damaged frame causing the trans linkage to move enough to drop a gear.

In that case you would think he would notice more than the shifting haha

 

[98_k1500]

I have seen one neutral drop because of a bad trans mount. It was pulling the shifter into neutral and would drop back into drive when you completed your curve (sometimes at high rpm if you were not careful) It was a work truck, we drove it like this for a few years before we finally junked it.

 

[88gmt400]

The truck is an 88 but no rust on the frame or anything and it could be a trans mount but It ain't a bad cab mount can't be trans was rebuilt 6000 miles ago

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[88gmt400]

And the trucks not goin into neutral its kicking down a gear still pulls when it kicks down then later on after work it don't do it as bad and it didn't do it as much before the radiator that's why I was asking

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