LBZ Programming History?

[LBZ]

In the latest software I have in my TechII (updated Nov 2008) there is no option to check programming history for the LBZ (or earlier).

I believe they are talking about detecting the current cals on an LLY and LBZ.

So, if you haven't re-flashed back to stock with a legal CVN before you take it in, you are screwed...

Thats not enough, they hold records of the last I believe 8-10 flashes now, a second ECM is the way to go.

Here we go again.

I wish someone could figure this sht out once and for all!! This is the second or third time I have heard this go around.

[RayMich]

Thats not enough, they hold records of the last I believe 8-10 flashes now, a second ECM is the way to go.

Everything I've read about the Duramax diesel says that the 2007-2009 LMM's ECM is the only one that keeps a record of the last 10 flashes. I have not seen anything saying that the 2001-2004 LB7, 2004.5-2005 LLY, 2006 LLY or 2006-2007 LBZ keep any trace data of previous flashes.

However, I have read a first-hand account where a dealer in Canada voided someone's warranty because they claimed that the CVN's in the LLY ECM in his Medium Duty truck did NOT match what GM said it should be, and he claims that he had re-flashed his truck back to stock using EFILive.

So, if anyone can provide actual proof that GM in fact CAN see that an LBZ ECM had been previously flashed even though it has been put back to stock, I and many others sure would want to know how they were able to determine that.

[GTPprix]

I was talking about the 2007.5+ units, sorry!

[RayMich]

I was talking about the 2007.5+ units, sorry!

No problem.

I do appreciate your interest on this, though.

[GMPX]

Here we go again.

I wish someone could figure this sht out once and for all!! This is the second or third time I have heard this go around.

I've have 'given up' trying to explain it, seems the answer I give is not the one people want to hear therefore won't be accepted.

Cheers,
Ross

[Cougar281]

I've have 'given up' trying to explain it, seems the answer I give is not the one people want to hear therefore won't be accepted.

Cheers,
Ross

I think you need a bold announcement/sticky:

IF YOU HAVE A LB7, LLY or LBZ, YOU DO NOT HAVE PROGRAMMING HISTORY!!!

[LBZ]

I think you need a bold announcement/sticky:

IF YOU HAVE A LB7, LLY or LBZ, YOU DO NOT HAVE PROGRAMMING HISTORY!!!

If this is true-works for me!!