2004 GMC Sierra 2500 HD Q&A

2004 GMC Sierra 2500 HD Question: what causes my truck to lose power and start to air pocket.

u turn on the vehicle put it in drive, about a mile into driving it starts to lose power and u have to slowly release gas peddle until it catches speed, but as soon as u try to push in gas alittle more, speed goes down and starts to air pocket and seems like it is choking. i was told it could be a sensor, but wouldnt know which one. -
Answer 1
You're terminology is different then mine, do you have a check engine light on, get the codes and re-post the codes. -
Answer 2
sorry clicked wrong Question -