sorry it took so long, but here are the pics of the thing in my exhaust... not sure of its a cat or resonator or what... also notice that i dont have a flange... theres just a band clamp between the bubble and the flex pipe... my neighbor has same truck but an 08 with the 4l60e and his doesnt have that bubble in the pipe and he has a traditional flange... hmm.. anyhow.... input needed...thanks..

 

that's definitely a convertor and a large one as well.
does it also have the other two in the y pipe?

 

is that the OEM shaft ????.. some trucks came out with that bubble ..thingy. . i guess 2 restrict air-flow

 

yes it has the other 2 in front of that one
lol yea thats the stock drive shaft

 

Definately a cat converter. My 08 does not have that one. Must have been added for emissions purpose on the 09's.

 

yup,damm another cat.my 09'denali does not have that,but does have that flexpipe and resonator at the end of the taiilpipe

 

california equiped?

 

not 2 my knowledge... bought in sw louisiana and built in mexico! lol

 

worldwide equipped.. they're a pain in the ***....especially those cheap driveshafts... do yourself a favour and don't go over your factory set limit... we've broken 3 driveshafts in less then 4months on the dyno.. they broke out at 210kph

 

could you repost your pics?...only one is showing now