Reliability of transmission - A8 vs M6

VanillaCams · 01-31-2016, 11:40 AM

I think I have my mind made up finally on transmission choice (M6) but as a I have been browsing these forums over the past month, I have noticed a couple of threads pop up with people having transmission issues, and it has always been the M6, which has me a little concerned.

I would have thought if anything, the more complicated system of the A8 would be more prone to problems? I know it's just anecdotal at this point, but was wondering what people's thoughts are on the reliability of the two transmissions?

Illmaticz · 01-31-2016, 12:55 PM

Personally I believe GM 6-speed is a really good, well built transmission as for the A8 just like any other automatic gear boxes in the market, treat it well and it will give you no problem but over time from my own experience as you put more mileage, automatic transmissions definitely start to feel sluggish. As for the long term reliability, the GM A8 has been out for how long? I am guessing 2-3 years and so far I am not aware of any major recall or reliability issues with it. At the end of the day I think it all depends on how well you take care of your car and your driving habits.

SS 1LE · 01-31-2016, 02:37 PM

The manual has been around for a long time as a Borg Warner, now a Tremec. The TR6060 is based of the older T56. First came out in the early 90's. Been in everything from the Camaro, to Corvette, to Viper, to Challenger, etc, etc. Very robust and reliable. The A8 in various guises is too new to say, but has had overheating issues in C7's and shiting issues in the full size trucks.

63falcondude · 01-31-2016, 02:47 PM

What M6 issues are you referring to? I'll be getting the M6 as well.

SS 1LE · 01-31-2016, 03:21 PM

Quote:

Originally Posted by 63falcondude

What M6 issues are you referring to? I'll be getting the M6 as well.

I haven't seen any yet except the guy who didn't know what CAGS was and the one today that may be normal clutch chatter or a bad flywheel (neither the transmissions fault).

VanillaCams · 01-31-2016, 04:29 PM

Quote:

Originally Posted by 63falcondude

What M6 issues are you referring to? I'll be getting the M6 as well.

Well on second look, most of the posts I saw before, I went back and checked again and it would seem people were at fault, not the M6. One accidentally put 87 octane (had knocking) and others, as mentioned, weren't familiar with CAGS.

Good to know this M6 is tried and true though, definitely gives me some peace of mind on my choice!

Stex · 01-31-2016, 07:22 PM

Saw my friend to day for beer. Was not in his new CTS-V, 2016? I asked. A-8 took a dump. Under 500 miles. They are replacing the trans. Tried to get a what was wrong but he was to pissed to give a straight answer. He said he checked around and there were some issues? on the CTS-V trans. Not sure if the same as the C-6 A-8. The CTS-v has a ton of go with the supercharger and 650 HP.

01-31-2016, 11:40 AM	#1
VanillaCams Drives: 2016 Camaro SS Join Date: Jan 2016 Location: Texas Posts: 41	Reliability of transmission - A8 vs M6 I think I have my mind made up finally on transmission choice (M6) but as a I have been browsing these forums over the past month, I have noticed a couple of threads pop up with people having transmission issues, and it has always been the M6, which has me a little concerned. I would have thought if anything, the more complicated system of the A8 would be more prone to problems? I know it's just anecdotal at this point, but was wondering what people's thoughts are on the reliability of the two transmissions?

01-31-2016, 02:47 PM	#4
63falcondude Drives: 16 Camaro, 11 Stryker, 00 Explorer Join Date: Dec 2015 Location: NJ Posts: 1,214	What M6 issues are you referring to? I'll be getting the M6 as well. __________________ NGM, 2SS, 6MT, NPP, MRC, Nav, Kalahari, Grey Wheels 1100 12/14/2015 3000 1/8/2016 (TPW 2/1) 3800 2/1/2016 5000 3/5/2016

01-31-2016, 12:55 PM	#2
Illmaticz Drives: 2020 Camaro ZL1-1LE Join Date: Jan 2016 Location: Brampton, ON Posts: 172 View My Garage	Personally I believe GM 6-speed is a really good, well built transmission as for the A8 just like any other automatic gear boxes in the market, treat it well and it will give you no problem but over time from my own experience as you put more mileage, automatic transmissions definitely start to feel sluggish. As for the long term reliability, the GM A8 has been out for how long? I am guessing 2-3 years and so far I am not aware of any major recall or reliability issues with it. At the end of the day I think it all depends on how well you take care of your car and your driving habits.

01-31-2016, 02:37 PM	#3
SS 1LE マスタング = 遅い Drives: 2017 Chevrolet Camaro SS 1LE Join Date: Aug 2015 Location: Florida Posts: 7,061	The manual has been around for a long time as a Borg Warner, now a Tremec. The TR6060 is based of the older T56. First came out in the early 90's. Been in everything from the Camaro, to Corvette, to Viper, to Challenger, etc, etc. Very robust and reliable. The A8 in various guises is too new to say, but has had overheating issues in C7's and shiting issues in the full size trucks.

01-31-2016, 07:22 PM	#7
Stex Drives: 67 goat, 69 goat ram air III Join Date: Mar 2009 Location: South texas Posts: 1,443	Saw my friend to day for beer. Was not in his new CTS-V, 2016? I asked. A-8 took a dump. Under 500 miles. They are replacing the trans. Tried to get a what was wrong but he was to pissed to give a straight answer. He said he checked around and there were some issues? on the CTS-V trans. Not sure if the same as the C-6 A-8. The CTS-v has a ton of go with the supercharger and 650 HP.

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