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Transmission slipping?

519 Views 4 Replies 3 Participants Last post by  Bigpapa72
I have a 09 with the 4.8l. When I'm on the highway doing 70 mph and ease on the gas my rpms go up but the truck doesn't take off. Anyone else have this problem or know what's wrong? Thanks
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They go up 1500 rpms but if I just put my foot in it it takes off. Truck has 116,000 trans oil is good
I've never had a truck do this. It's like the motor will rev and back off. I'll try to get a video and post it up.
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