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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 08-20-2009, 02:13 PM   #1
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My L99 Case is Closed.

Got the call from GM and my case is closed. The car thinking it was running on 87 Octane is all they found wrong and they just reset that. They said that is it and all is well.

End of my story.
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Old 08-20-2009, 02:14 PM   #2
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Old 08-20-2009, 02:15 PM   #3
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Well sounds like there are many on this board who have the same problem. We could sure use your help to let everyone else with sluggish problems know the potential problem and solution.
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Old 08-20-2009, 02:17 PM   #4
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Well sounds like there are many on this board who have the same problem. We could sure use your help to let everyone else with sluggish problems know the potential problem and solution.


Amen..
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Old 08-20-2009, 02:24 PM   #5
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Scott,

Are you still happy with the performance of your car? Seems to be completly resolved now?
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Old 08-20-2009, 02:27 PM   #6
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Moves pretty good, 2010 GT tried to get away from me at a stop light the other day. I was right behind him and the light changed. He jumped and smoked his but I caught him right on his bumper. I backed off at the speed limit of 50.

Video I made last weekend showed 0-60 in 5.0 second. So looks like it is working Chris.
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Old 08-20-2009, 02:28 PM   #7
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Well sounds like there are many on this board who have the same problem. We could sure use your help to let everyone else with sluggish problems know the potential problem and solution.
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Old 08-20-2009, 02:32 PM   #8
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I hope GM is on this with a TSB soon, so the rest that have issues can get this taken care of.
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Old 08-20-2009, 02:48 PM   #9
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What can the "normal" person do to reset the timing curves? Does everyone need GM to come to there homes to reset the curves?
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Old 08-20-2009, 02:53 PM   #10
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So what if Scott puts 87 back in his car accidentally...Is he hosed again... This is not good news!!! especially since they didn't change out a defective ECM.

I have no clue what my dealer put in on delivery but I have run 93 ever since...

This would affect LS3s also
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Old 08-20-2009, 02:55 PM   #11
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What happens if you accidentally put in 87 or even 89 ocatane again? I'm sure you don't want to test that but while the GM guys had your case open that should have been one of the tests. That way they can determine if it was a fluke bug or if anytime someone puts in a low octane it's not re-learning properly (a flagrent - needs to be fixed bug).
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Old 08-20-2009, 02:59 PM   #12
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Quote:
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So what if Scott puts 87 back in his car accidentally...Is he hosed again... This is not good news!!! especially since they didn't change out a defective ECM.

I have no clue what my dealer put in on delivery but I have run 93 ever since...

This would affect LS3s also
The LS3 tune is completely different than the L99. Remember the L99 has Variable Valve Timing and Cylinder Deactivation...

That will require completely differents tunes/programs. From what I've been able to learn from some of our insiders. This issue is only found in the L99 tune.

FWIW

Welcome back BTW!
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Old 08-20-2009, 03:01 PM   #13
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Quote:
Originally Posted by caverman View Post
What happens if you accidentally put in 87 or even 89 ocatane again? I'm sure you don't want to test that but while the GM guys had your case open that should have been one of the tests. That way they can determine if it was a fluke bug or if anytime someone puts in a low octane it's not re-learning properly (a flagrent - needs to be fixed bug).
It is interesting to know if GM is going to make any changes to the ECU programming down the road or not.. If they are closing the case, what exactly does that mean for those still affected and what does it mean for Scott if he puts in a lower octane gas..
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Old 08-20-2009, 03:09 PM   #14
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Got the call from GM and my case is closed. The car thinking it was running on 87 Octane is all they found wrong and they just reset that. They said that is it and all is well.

End of my story.
Scott
Did they say if or when they might have a fix for the rest of us?
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Old 08-20-2009, 03:37 PM   #15
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Nope they did not say anything else. So I do not know what to tell everyone. And I pray that I never get low octane gas in it again since it will probably screw it up again.

The only strange thing I can say is the my oil life indicator was back at 100% after I got my car back. It was at 70% when I took it in, so I wonder if they pulled fuses to clear out the ECM or what?
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Old 08-20-2009, 03:42 PM   #16
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I watched the dealer put 93 octane in mine and want run anything else........
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Old 08-20-2009, 04:16 PM   #17
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Quote:
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.. If they are closing the case, what exactly does that mean for those still affected
What does your 'gut' tell you?

Quote:
Originally Posted by Scott@Bjorn3D View Post
Nope they did not say anything else. So I do not know what to tell everyone. And I pray that I never get low octane gas in it again since it will probably screw it up again.

The only strange thing I can say is the my oil life indicator was back at 100% after I got my car back. It was at 70% when I took it in, so I wonder if they pulled fuses to clear out the ECM or what?
So, we may have to fix the car ourselves. That's what my money is paying for.
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Old 08-20-2009, 04:21 PM   #18
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I got a 42 thousand dollar V6 Camaro for sale, with SS badges, a mail slot and a couple dummy cylinders for 'the look'.

Let me know if anyone is interested.
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Old 08-20-2009, 04:24 PM   #19
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LS3

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What does your 'gut' tell you?

So, we may have to fix the car ourselves. That's what my money is paying for.
Don't know why they didn't use the LS3 in the auto cars I believe they do in the Corvettes with AT
May be wrong I usualy am
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Old 08-20-2009, 04:35 PM   #20
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I got a 42 thousand dollar V6 Camaro for sale, with SS badges, a mail slot and a couple dummy cylinders for 'the look'.

Let me know if anyone is interested.
sure its not a 4 banger....?
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Old 08-20-2009, 04:37 PM   #21
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Can't accept cyl deactivation

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Originally Posted by irpq11 View Post
I got a 42 thousand dollar V6 Camaro for sale, with SS badges, a mail slot and a couple dummy cylinders for 'the look'.

Let me know if anyone is interested.
I am glad I ordered 6 Man would have wanted auto but don't like cylinders cutting out reminds me of regular V8 when it looses cylinders which is a fact
and don't sound very good when they cut out and feel like its dragging an anchor when it does
When mine arrives hopefully next week the first thing waiting is the skip shift
eliminator
not t mention saving $1200
see my other post on this thread LS3 with auto
you pay for the power from idle to redline at any speed
Hopefully I didn't offend anyone
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Old 08-20-2009, 04:39 PM   #22
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I got a 42 thousand dollar V6 Camaro for sale, with SS badges, a mail slot and a couple dummy cylinders for 'the look'.

Let me know if anyone is interested.

I will give you 20 for it.
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Old 08-20-2009, 04:40 PM   #23
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Don't know why they didn't use the LS3 in the auto cars I believe they do in the Corvettes with AT
May be wrong I usualy am
easy... CAFE. and they could not get under the gas guzzler tax without the 8-4 deactivation. The LS3 does not have that capability. I was told by a dealer that the L99 is a dog. No match for the LS3. GM needed that to get the SS under the guzzler tax. I guess the LS3 just slides in on its coat tails.
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Old 08-20-2009, 04:42 PM   #24
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I got a 42 thousand dollar V6 Camaro for sale, with SS badges, a mail slot and a couple dummy cylinders for 'the look'.

Let me know if anyone is interested.
Sorry man, you screwed up and got the auto! J/K.. I am sure it runs OK.
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Old 08-20-2009, 04:43 PM   #25
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Downloading flash programs

Quote:
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It is interesting to know if GM is going to make any changes to the ECM programming down the road or not.. If they are closing the case, what exactly does that mean for those still affected and what does it mean for Scott if he puts in a lower octane gas..
I just retired about a year ago from being a marine mechanic being a certified Mercury marine tech we were sent programs called flashes to reprogram the ECUs
we hooked the diagnosis computer and made changes to the ecu
any upgrades or improvements were available to us to correct problems
Maybe if they recognize they have a problems it will be corrected at the dealer
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