Is it perhaps a drive belt sound? Is the ticking related to/relative to engine RPM/speed? If it's ticking, and you reach in and rev the engine, does the ticking speed up? Is it a super fast ticking (approximately engine RPM) or is it a slower tick (Like a valve or something - your cam shaft rotates at half of the crank's RPM, so slow tick is valve train related, fast tick is crankshaft related) If none of those things apply to your ticking, I doubt it's engine related.

Evap canister purge solenoid anyone?

 

Sorry all, life intervened. But as of today, I have a steady check engine light, a newly sprung drip from what is likely the rear main. I put it on ramps and went under on the creeper now that it is steady enough go chase. I am confident it is coming from the bottom end, it is loudest near the flywheel. Taking it in later this week before I end up with a rod sticking through the block!

 

P.S..............what a great friendly room you have here! Like a bunch of buddies from around the neighborhood, but with much more knowledge!

 

I know a few guys with the famous 6.0 tick. GM says its normal! I don't agree with that at all!! When you find out what it was please let us know.

 

I will post up once it is figured out............right now my money is on the flywheel again. Its in the shop now, time will tell.

 

And the verdict is..........................flex plate again. Cracked out around the bolt pattern, the same before. It did not act quite the same way as it did the first time it went out, which threw me a bit. I don't hammer on my vehicles, especially this one as it has been sort of the family driver and does not have much off road time compared to my work/hunting truck. The only thing that catches my mind is that it down shifts REALLY hard when I floor it to pass someone or need to keep speed up on a hill, etc. The broke part only has 50K miles on it. I have never heard that these combos are especially prone to puking flywheels, but I don't know everything! Anyone know if this is more common than I expect, or is my Irish luck turning bad? Thanks to all for the ideas.

 

I don't know if these trucks are known for this problem but the hard downshift is normal for these trucks. I know a guy with one and it will shift down hard and wind right up to 6000 rpm easy if he pushes it 6200 rpm hes never had a problem with the flex plate.