Ok so dealer said i had 4 injectors fail and 1 bad injector. they ordered new injectors for me and covered it under warranty. when it did not fix the problem of the rough idle they began to look further at my truck. after seeing a boost control module they ceased all work on my truck and said they would not cover it under warranty.

Could the boost controller cause the injectors to fail. The boost controller was never ran higher then 1/8 of its potential. Never ran my truck over 26psi. always wanted to play it safe.

If the injectors failed and there is no compression in cylinder 4 what further issues could be going on inside the engine. the heads have not been removed yet because dealer at this point will not touch it any further. There is no sounds of metal knocking just rough idle. the white smoke it was emitting has gone away after changing the injectors the dealer said but still no compression in cylinder 4.

ANyone???

In theory, they have to prove your add-ons caused the failure. Honestly though, you may have an uphill battle with this one.

May have to authorize some tear down time to at least find the failed part and then hope it wasnt caused by the added boost and/or PPE programmer.

If its a piston, they will refer to the injector spray pattern on the piston that GM has shown in a TSB to determin power adders.

If its a valve problem, then they should cover it... You get the idea.

Just authorized.......already in the works.

good luck, hope it all works out for the best.