C5 computer tunning
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4th Gear
Joined: Apr 2018
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C5 computer tunning
Does anyone know it by changing the transmission from mechanic to automatic do I have to do any tuning to the computer please help me out with this I am newbie so I don't know much about it
Safety Car
Joined: Dec 2010
Posts: 3,938
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From: Fords, NJ
Yes, along with a few other changes....I'll let World Class Corvette GM Technician Paul Koerner explain:
HI there,
There are a number of factors to consider here.
#1, wiring. The six speed manual has much less wiring than a comparible automatic transmission. The 4L60-E, which is what could be installed, requires a different engine control module and the correct wiring to run down the torque tube to operate the transmission. The ECM will also have to be reprogrammed correctly.
#2, ABS/active handling systems will have to also be programmed correctly for this change.
#3, your rear differential can be used, but I do not recommend it as this would require aftermarket programming which has not been shown to be accurate enough for long term reliability of the powertrain.
#4, center console changes would necessitate purchase of the shifter assembly and cable to the transmission. Lighting to the shifter PRNDL will also have to be wired in.
#5, removal of the clutch pedal assembly and installation of the correct brake pedal would also be important here for comfort of the driver.
A preliminary cost analysis is about $10,000 between wiring harness, transmission, differential, PCM and pedal assembly, including some, but not all labor costs.
THE MOST IMPORTANT ASPECT in most owners view, is that every single part of this car will have to be removed. Entire powertrain removed to correctly replace the wiring harness. The entire interior including dash, carpeting, seats to correctly run the body harness for the changes.
I do agree with others here, a different automatic equipped vehicle would be a better option, IMO.
Allthebest, Paul
GM World Class Certified Technician.
Like us: www.facebook.com/corvettemechanic
http://twitter.com/GMvettemechanic
http://thecorvettemechanic.com "
HI there,
There are a number of factors to consider here.
#1, wiring. The six speed manual has much less wiring than a comparible automatic transmission. The 4L60-E, which is what could be installed, requires a different engine control module and the correct wiring to run down the torque tube to operate the transmission. The ECM will also have to be reprogrammed correctly.
#2, ABS/active handling systems will have to also be programmed correctly for this change.
#3, your rear differential can be used, but I do not recommend it as this would require aftermarket programming which has not been shown to be accurate enough for long term reliability of the powertrain.
#4, center console changes would necessitate purchase of the shifter assembly and cable to the transmission. Lighting to the shifter PRNDL will also have to be wired in.
#5, removal of the clutch pedal assembly and installation of the correct brake pedal would also be important here for comfort of the driver.
A preliminary cost analysis is about $10,000 between wiring harness, transmission, differential, PCM and pedal assembly, including some, but not all labor costs.
THE MOST IMPORTANT ASPECT in most owners view, is that every single part of this car will have to be removed. Entire powertrain removed to correctly replace the wiring harness. The entire interior including dash, carpeting, seats to correctly run the body harness for the changes.
I do agree with others here, a different automatic equipped vehicle would be a better option, IMO.
Allthebest, Paul
GM World Class Certified Technician.
Like us: www.facebook.com/corvettemechanic
http://twitter.com/GMvettemechanic
http://thecorvettemechanic.com "
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Le Mans Master
Joined: Sep 2013
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From: Wisconsin
Are you planning to change your transmission from mechanic to automatic yourself? If so,you may want to rethink it.
Safety Car
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From: Fords, NJ
Safety Car
Joined: Dec 2010
Posts: 3,938
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From: Fords, NJ
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Safety Car
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From: Fords, NJ
Did you read the list of items that needs to be changed in order to do the swap ? Shifter bracket is the least of your concerns .
Le Mans Master
Joined: Sep 2013
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From: Wisconsin
I think this guy is trolling us. Unless he believes all you have to do is change the shifter from a manual to an automatic..
Race Director
Joined: Apr 2007
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From: South Western Ontario
Wow, nice responses. Lots of people have done the swap. It's time intensive, but not that terribly hard to do.
To answer the original question, you have to reflash the PCM to an automatic transmission tune.
To answer the original question, you have to reflash the PCM to an automatic transmission tune.
Pro
Joined: Jan 2016
Posts: 550
Likes: 53
From: Fort Myers Florida
No bracket necessary bro! Just get your new or used manual shifter and make sure you get the cover and all that good stuff like new center console plastic and bolt it on. Once you take out the auto shifter and all relevant plastic you will see how easy it is!
now as far as everything else? Let us know how that worked out for you.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
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From: Wisconsin
It really does not sound like the OP has the skillset to do the job.(He really doesn't seem to have a clue). It really is a big job and not for the inexperienced. Just trying to save him some grief and stop him from tearing the car apart. Encouraging him to do something he will regret is irresponsible.
Sell the car and get an auto. There are a lot of them out there.
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From: Anthony TX
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Unless you have a wrecked parts car to get ALL the required AUTO PARTS from, this is a VERY expensive and time consuming project.
It also has to be a parts car in the specific year that yours is as some wiring differences exist between different years.
You could call one of the forum wrecking yards and see if they can give sell you a swap package with all the parts necessary.
Hell, there are even some parts needed to be converted INSIDE the DIFFERENTIAL!
YES the PCM will need to be flashed to an A4 configuration. That's the EASY PART!!
Good luck my friend.
Bill
It also has to be a parts car in the specific year that yours is as some wiring differences exist between different years.
You could call one of the forum wrecking yards and see if they can give sell you a swap package with all the parts necessary.
Hell, there are even some parts needed to be converted INSIDE the DIFFERENTIAL!
YES the PCM will need to be flashed to an A4 configuration. That's the EASY PART!!
Good luck my friend.
Bill
Thread Starter
4th Gear
Joined: Apr 2018
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No shift gears
Can you tell me what problem could be that our c5 it's no shifting gears only on 2 n 4 gear, we replaced it from mechanic to automatic, we tune the computer, the tranny was replaced and rebuild, install cable shifter accordingly but we encounter this issue that is not shifting gears, what could be the issue ??
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
Can you tell me what problem could be that our c5 it's no shifting gears only on 2 n 4 gear, we replaced it from mechanic to automatic, we tune the computer, the tranny was replaced and rebuild, install cable shifter accordingly but we encounter this issue that is not shifting gears, what could be the issue ??
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
Can you tell me what problem could be that our c5 it's no shifting gears only on 2 n 4 gear, we replaced it from mechanic to automatic, we tune the computer, the tranny was replaced and rebuild, install cable shifter accordingly but we encounter this issue that is not shifting gears, what could be the issue ??
There is no common part failure that results in a 4L60e only shifting between 2nd and 4th gears.
IF you actually put together a clear concise post detailing the issue you might get more detailed and useful answers. Right now, your unclear and uninformative blurbs are mostly useless to work with. From your first post until now I highly doubt you decided to do the swap, did the swap and rebuilt the transmission so it's become obvious your first post was after you've been struggling with an issue. Yet, nothing about that was posted.
Last edited by lionelhutz; Apr 30, 2018 at 01:20 PM.
Safety Car
Joined: Dec 2010
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From: Fords, NJ
It could be the transmission, wiring or PCM.
There is no common part failure that results in a 4L60e only shifting between 2nd and 4th gears.
IF you actually put together a clear concise post detailing the issue you might get more detailed and useful answers. Right now, your unclear and uninformative blurbs are mostly useless to work with. From your first post until now I highly doubt you decided to do the swap, did the swap and rebuilt the transmission so it's become obvious your first post was after you've been struggling with an issue. Yet, nothing about that was posted.
There is no common part failure that results in a 4L60e only shifting between 2nd and 4th gears.
IF you actually put together a clear concise post detailing the issue you might get more detailed and useful answers. Right now, your unclear and uninformative blurbs are mostly useless to work with. From your first post until now I highly doubt you decided to do the swap, did the swap and rebuilt the transmission so it's become obvious your first post was after you've been struggling with an issue. Yet, nothing about that was posted.
