He has 186,000 miles so he is long out of the warranty period.

Having chunks of debris and a runaway engine "dieseling" would say smoked turbo to me.

I would start there and work towards the head rather than away from it.

Where did you find the pieces of Shrapnel? Before or after the intercooler?

Hopefully the pieces of debris stopped there.

 

In the intake.

 

intake manifold or the air filter side of the intake?

 

it wont matter bet the have already hit the cylinders and have attached themselves to the cylinder wall already. been there done that

 

intake side, under the grid heater, pulling the head today!

 

Unless you forked over big bucks for an extended warranty you pretty much got left out in the cold on the 06 trucks. 12,000/1 year, that was it in '06.

 

warranty has always been 3/36k and 5/100k for the motor someone was yanking your chain on the 12/12

 

you can pull valve cover and ck valves, if its "locked" it has to be mechanical or hydraulic interference with the piston or crankshaft get someone to ck compression on # 3

 

12/12 is when they replace parts on the drive train that are out of warranty.