No bands in the 545rfe clutch packs and steels, with a plenetary centre.
Any codes showing up? The tranny will detect slippage and usually give you an indication to where it may be happening, you can also look at cvi data if you have a half decent scan tool as well, which should tell you which of your clutch packs are slipping.
It could just be burnt oil or very worn oil and has lost its properties to work correctly...
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