Chevrolet Silverado C-1500 Work Truck

Well my problem is that I have a Chevrolet truck C-1500 Word Truck that functioned badly. Detect that the TP sensor was changing it and everything but when I try the truck it is as if 1 or 2 cylinders fail when it is in 900 and more rpm

the strange thing is that when the TP disconnect the TP the truck does not fail and by connecting it empies to fail denue

and the TP is new if someone save q ties to reply