Help!!! 4.8L Tahoe???

[2002tahoels]

Today on my way to work my Tahoe started to act up. When accelerate my truck sounds like I have a cold air intake on it. Keep in mind the tahoe is bone stock, and all intake hoses are connected and tight. Also just before I pulled into work, I accelerated to the floor and the truck did not want to go, and I could hear a clicking while I was accelerating. After that the "Service Engine Soon" light was flashing! Any Ideas????

[Butch 02 Denali]

Need to know what code was set. Can it be driven?

[2002tahoels]

Yea it's drivable.