I've not looked on there but is the problems your having a common thing among g8's?
Love those cars, sucks you've had so many problems.
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Have you searched around on ls1tech?
Not really. The 6l80 didn't start in cars until the 2010 Camaro I believe, and it is slightly different than the G8. Not sure when they started in trucks either.
That stinks. If it makes you feel any better the suburban is stumbling again. Hopefully it is just a bad plug or wire. I know it is electronics, but it won't throw a code so I can't find it. All the fuel trims look good, spark map looks fine, but my pedal position is a little high at idle.
It doesn't, but sorry you continue to have issues too.
I really can't afford to get out of this car right now but it would probably help my sanity. I wish I could turn this and my truck into a 2015 crew cab 1500 but 1) I can't afford it and 2) all the stories of direct injection issues got me scared.
I would look at getting a smaller truck but I don't think Burgundy's Yukon XL could handle even the limited towing duty I would need. Maybe with a cam swap, but not strong enough as is.