purge valve location

[HeavyDuty]

tony do a web search for Tonkin GM use the parts link they have the whole parts book online with exploded diagrams you will find your answer there

I printed off the whole book for my 2009, it does't name the parts on the diagrams but you can if you have the time label everything LOL I myself don't like to have all the answers when I start a fixing project so I didn't label them.

and would be cool if you posted the diagram back here with the purge valve identified LOL so when someone searches and finds your post the answer will be right here for them....we are all in this together !