Seconday air injection woes

Hey All,
I am in need of your help again. Vehicle is a 2000 Silverado 1500 w/ 5.3l ~70k miles. About 2.5 years ago, I had a P1416 - Seconday air
injection system bank 2 malfunction. The truck was under warranty so it was fixed. The dealer found a bad pressure relief valve on the passenger side. Now, the check engine light is back on and I am getting a P0410. According to a quick web search, this is a Seconday Air Injection System Malfunction. Does anyone know where to start with this? Is this a DIYer type of repair?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.