Exhaust louder at idle

[chevyguy04]

I have an 06 GXP, and recently the exhaust got louder/deeper while at idle and accelerating.

Ideas why?

[Fivefingerdeathpunch]

maybe there's a hole in the muffler now???

[matt5112]

Heard of this recently... 4 year old GXP needed mufflers.

[chevyguy04]

I put it up on the lift and inspected the exhaust and found no holes, so its probably internal, i figured like a baffle or something is bad.

Have to love it 45,000 miles and 5 yrs old, needs exhaust work.

So far its been the worst GM vehicle we have owned.....Out of a lot....Time to say bye bye!