Modify the 6.0 liter air intake tube to go on the 5.3 liter 2500 HD. Save $100-200 on the part. 

2007 Chevy Silverado
Throttle body error code
This video shows how to use the existing parts from the old broken part to make the new air intake hose compatible with the 5.3 liter valve cover breather hose.
Intake air hose leak will keep your truck from running.
No start.
stalling/ misfire
engine running rough
shifting issue / problem
696-402 6.0 liter engine. $70-$120
696-010 5.3 liter engine. $150-$360
Be sure to get the correct part, or you may need to plug the valve cover breather hose.