Is the G8 TapShift really that sloppy?
Thread Starter
TECH Enthusiast
Joined: Jul 2007
Posts: 596
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From: Toledo, Ohio
Is the G8 TapShift really that sloppy? I hear many people complaining about the G8 tapshift being slow to react, though others have said it is very smooth.
Are some people being over critical, because they were expecting a manual like response? Or are some too soft, possibly because they have not had much experience with manuals?
I wanted to ask someone who's driven the car. I do know however, everywhere I have read, that it is superior to the tapshift found on the Grand Prix Com-G Package.
Are some people being over critical, because they were expecting a manual like response? Or are some too soft, possibly because they have not had much experience with manuals?
I wanted to ask someone who's driven the car. I do know however, everywhere I have read, that it is superior to the tapshift found on the Grand Prix Com-G Package.
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
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From: Decatur, TN (N-W of Athens)
I'm sure it's allll in the programing, and if you had it tuned, you could get it to be nice a quick and firm. After all, these cars are fully electronic (with maybe the exception of the TB, but quite a few are fly-by-wire, even a few Vettes were/are).
my dad just bought my mom one and i drove it love it tuning will help but i feel other than that it feels good for normal drivin people who want something factory but my father and i ordered mom the full kooks exhaust and we are gettin tuned maybe a cam n converter mom has no idea ... but it will be one hell of a ride 
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It just never shifts on time, 1-2 is the worst. If I shift mine at 5700 it might shift on time or it might not shift and hit the rev limiter. You just never know. I've not tried to shift mine at the track yet, but, maybe the next tiime out I'll give it a shot. Most who have tried the manual shift in drag racing say there car always runs slower in the manual mode.
Teching In
Joined: Jul 2008
Posts: 18
Likes: 0
From: south dakota
Like all GM stuff it needs to be modified to work. At least there are a million aftermarket companys that offer fixes to GM'S oversites.
What a lot of people think is that it will be a huge difference over just taking any other auto and shifting it by bumping the stick. The same thing applies with the new vettes, I can't count how many vette owners compared their "paddle shifted" cars to the ones in a F430 etc. which basically have a true manual trans with a clutch etc that is being shifted for you. The 430 shifts in what 60 milliseconds i think?
Staging Lane
Joined: Nov 2008
Posts: 55
Likes: 0
From: Springfield, TN
ive heard the same thing but every time i ask the dealership about it they scratch their heads and send me back home. and yes it is very slow and sloppy. gonna do some tunnin on it when i git the ole hp tuners here...
I had my TCM updated yesterday, it helpes, makes everything more crisp, the changes dont show up in HPTuners so you have to go to a dealer to get it done. I would recommend it. Bring the car in for an acceleration hesitation while shifting.
I think the bulletin number is #08-07-30-036.
Apparently they have to look up the bulletin to get it because it is not a recall. They argued with me saying I did not need it. BS the stock TCM tune is so sloppy.
Heres a post on the issue.
http://www.g8board.com/forums/showthread.php?t=5992
I think the bulletin number is #08-07-30-036.
Apparently they have to look up the bulletin to get it because it is not a recall. They argued with me saying I did not need it. BS the stock TCM tune is so sloppy.
Heres a post on the issue.
http://www.g8board.com/forums/showthread.php?t=5992
Don't update. Call VMS and rent their flash tool to reprogram your TCM. Acts just like a shift kit, and actually shifts when you want it to. HP Tuners also has the ability to tune, either way, it'll still be better than stock, but it IS in the TCM tune.
Staging Lane
Joined: Jul 2006
Posts: 53
Likes: 0
From: Houston
I had my TCM updated yesterday, it helpes, makes everything more crisp, the changes dont show up in HPTuners so you have to go to a dealer to get it done. I would recommend it. Bring the car in for an acceleration hesitation while shifting.
I think the bulletin number is #08-07-30-036.
Apparently they have to look up the bulletin to get it because it is not a recall. They argued with me saying I did not need it. BS the stock TCM tune is so sloppy.
Heres a post on the issue.
http://www.g8board.com/forums/showthread.php?t=5992
I think the bulletin number is #08-07-30-036.
Apparently they have to look up the bulletin to get it because it is not a recall. They argued with me saying I did not need it. BS the stock TCM tune is so sloppy.
Heres a post on the issue.
http://www.g8board.com/forums/showthread.php?t=5992
