Loss power limp mode

Chevrolet Silverado 1500 2008 5.3 flex fuel  2000000 miles
It acts like you don’t wanna shift or it doesn’t have the power to allow the car to even go above 45 miles an hour idles fine. It sounds fine until you try to accelerate change the throttle positioning center.
Bryan from United States 3 years ago  
BR
3 reports 
Bryan from United States 3 years ago
Help me I have change the ecu tps checked fuel comp but can’t check it where it’s messing up help
smokes from United States 2 years ago
might want to check your fuel system i had the same issue n it comes to find out that the senior to the gas wasn’t reading the tank consumption so the engine wasn’t getting the amount of gas it needed there for i kept losing power
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