that sucks... hopefully Nugs will be able to figure it out. The Duramax does have a problem with making a tick tick sounds but i never heard it the other weekend so im not sure
We got it running and i drove it back to Novato, but there was an oil leak and some of the parts didn't fit right so i ordered all the right parts now. Nope i didn't know you ran your Tahoe ha
Waiting on parts still... should be out at the track next Wednesday or Friday. You need to take the Cat off if you want to hear a difference. I'd pull the muffler too but you just paid for that ha.