Possible exhaust leak ???

[dash driver]

Good day everyone I have a 08 gmc crew cab with the 4.8 engine and just recently I noticed a ticking noise. When Im driving and I pass something close like a park car or if the road is narrow with house on both sides I hear a ticking from the engine and when i give it more gas it will get louder. when Im parked and I increase the RPMS there is nothing to be heard which is leading me to a exhaust gasket or seal gone. does anyone have anythoughts or something I can check

Thx

[GMstrong]

Yea more then likely a collector leak.

[GMCustomerService]

Has your concern been resolved? If you need further assistance please feel free to contact me privately with the last eight of your VIN. Thank you in advance.

 

Tricia, GM Customer Service.

[MorrisGray]

Sounds like one of the front wheels with a loose center cap to me or a rock in it maybe?

[dash driver]

Had the truck back to the dealer and it was a bad u joint on the rear drive shaft. Thx for your input