What is this noise? Video inside.

[silverunicorn]

I am thinking it is the secondary air injector pump (or whatever it is called) that The Roadie is always talking about . Can anyone confirm? This noise happens about 30 seconds after I start the vehicle. Always wondered what it was, LOL


Sorry for the poor video:

[video=youtube;pOdidnHcPhU]http://www.youtube.com/watch?v=pOdidnHcPhU&feature=youtu.be[/video]

2006 Trailblazer
117K miles

Thanks!

Chris

 

[The_Roadie]

That's it. Like a shop vac on steroids. Only runs on a cold start.

 

[BlackoutTBEroc]

Well First Thing Is First. Pop Hood And Try To Listen to where its comin from. Im Thinking vacuum line leak.. reply back if you resolve. i see the Roadie Has already Solved