Smoke coming out of exhaust when driving truck accelerating

It's possible that some condensation has been trapped in the exhaust that needs to be vented out. However, see your local Chevrolet dealership and share your concern - they would be quite aware of any usual problems seen and may be able to come up with a good explanation. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops