E38 TIS Programming warning

[GMPX]

Hi all,

We just wanted to make people aware that EFILive support is now seeing a number of people who have had problems with E38's after reflashing them with TIS.

To narrow it down, the issue appears to be when the ECM is updated to a 2009 OS from a previous release.
The sort of issues that are being reported are -

• ECM becomes locked (can't read or flash) - Use key $E405 if this happens.
• ECM looses serial number (lost license data)
• VIN becomes scrambled

To make matters worse sometimes the ECM cannot be recovered from this state and a new ECM must be purchased, it really comes down to luck as to what level of corruption occurs.
It may have something to do with the ECM version, there appears to be two part numbers for the E38:
2006 - 2007 = 12597121
2008 - 2009 = 12612384
We think it is when a 12597121 ECM is updated to 2009 then problems occur, it's hard to say at this stage.
The final issue is that the vehicle may actually continue to operate normally even after the corruption which makes the decision of buying a new ECM difficult.

So far we have had no reports of similar problems when using EFILive for programming, but unfortunately people need to use TIS sometimes to put a stock tune back in to a vehicle if they weren't the original tuner or to update to the latest releases from GM.

Please keep in mind that this is not an EFILive issue, therefore EFILive will not issue free replacement licenses for corrupted / replacement ECM's.

At this stage there had been no reports of similar problems with the E67, but that doesn't mean there is no problem - EDIT: Apparently E67's are suffering the same problem too.

Cheers,
Ross