08 Software Update - Locked ECM?
Thread Starter
Safety Car
Joined: Nov 2007
Posts: 4,436
Likes: 875
From: Bay Area CA
08 Software Update - Locked ECM?
Had my 08 Z51 coupe in service for warranty work, sway bar end links and differential fluid change. They also updated the software to ECM WC: 11F3C. Anyone know what this upgrade might be? I feel no difference in the performance of the car, I was just wondering if anyone knew what the software upgrade effected? Rumor around the boards is that GM is locking the ECM's?
Drifting
Joined: Apr 2008
Posts: 1,356
Likes: 105
From: Mesa AZ
Is this locked ECM just a rumor or fact? And I thought the update was supposed to have the updates from the '09, I.E. Knock sensor fixes, 5th gear rpm spike, and a couple of enhancments for a little more SOTP and a little bit of power (talking a few horses, nothing to write home about)?
Supporting Vendor
Joined: Aug 2007
Posts: 1,453
Likes: 87
From: CT
it's a fact...
GM changed their seed-list and keys... hell, after the update, the TechII can't even access it at this point... unless they've come out with an update for the TechII since they first started this...
here's more info for ya...
http://diablosport.com/index.php?nam...ghlight=locked
and another one, start here and go on to page 2: http://diablosport.com/index.php?nam...&p=68746#68746
GM changed their seed-list and keys... hell, after the update, the TechII can't even access it at this point... unless they've come out with an update for the TechII since they first started this...
here's more info for ya...
http://diablosport.com/index.php?nam...ghlight=locked
and another one, start here and go on to page 2: http://diablosport.com/index.php?nam...&p=68746#68746
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06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS LS3, short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake, catch-can, ported/polished TB, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS LS3, short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake, catch-can, ported/polished TB, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
Safety Car
Joined: Aug 2006
Posts: 4,206
Likes: 6
From: Makena, Maui & NM
http://www.hptuners.com/forum/showthread.php?t=21305
I am satisfied after research that it is a bug, not a stealth locking ecm ploy on the part of GM.
Last edited by siffert; Jan 10, 2009 at 12:11 AM.
