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Corvette
C7 Forum
A8 Automatic issues wide spread or not?
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<blockquote data-quote="cdnrx1" data-source="post: 235112" data-attributes="member: 2880"><p>Although the triple flush can be done as a DIY service, it's a difficult job at best. Without the factory lines, couplers and flush machine it's almost impossible to get all of the old ATF completely out of the system and that is critical to fixing the TC "shudder". As much as it pains me to say it, you're better off to have it done at a <strong>COMPETENT</strong> dealership. I know, that's a tall order but there are some and if you can find one that will do the job properly it's probably worth the cost. I say "properly" because I am personally aware of a dealer who skipped running the transmission through all 8 gears plus reverse and neutral in between flushes. They claimed that it wasn't necessary as the complete fluid exchange is effected without performing this step. They obviously know better than the GM / Mobil 1 engineering staff. Typical dealer BS and, needless to say, my friend's TC "shudder" came back in about 5000 kls. The dealer was just trying to save time and, as such, make more money on the warranty repair.</p><p></p><p>It's unfortunate for those who's car is no longer covered under the powertrain warranty as the out of pocket repair is quite expensive. Pricing will vary depending on region and if you're buying the ATF from the dealer, from an e-seller or an independent supplier. Average online price for Mobile 1 Synthetic LV ATF HP blue label is around $110.00 CDN for a case of 6. You'll need 24 qts. / ltrs. Don't know what dealers are selling it for but I would think it's a lot more. Add approximately 3 hours of labour @ $120.00 per hour, again, depends where you are, and the lowest price you're likely to see is around 800.00 CDN.</p><p></p><p>Another option is to try a friction modifier like <a href="https://www.lubegard.com/products/isf/" target="_blank">Lubegard</a>. This would be considered an "ounce of prevention" and is, in my opinion, a DIY service. If you do the research, particularly on the large US forums, you'll find that a number of C7 owners have had some success with this approach. This will be my first shot at fixing the "shudder" if / when it occurs.</p><p></p><p>Best regards</p><p>Ross</p></blockquote><p></p>
[QUOTE="cdnrx1, post: 235112, member: 2880"] Although the triple flush can be done as a DIY service, it's a difficult job at best. Without the factory lines, couplers and flush machine it's almost impossible to get all of the old ATF completely out of the system and that is critical to fixing the TC "shudder". As much as it pains me to say it, you're better off to have it done at a [B]COMPETENT[/B] dealership. I know, that's a tall order but there are some and if you can find one that will do the job properly it's probably worth the cost. I say "properly" because I am personally aware of a dealer who skipped running the transmission through all 8 gears plus reverse and neutral in between flushes. They claimed that it wasn't necessary as the complete fluid exchange is effected without performing this step. They obviously know better than the GM / Mobil 1 engineering staff. Typical dealer BS and, needless to say, my friend's TC "shudder" came back in about 5000 kls. The dealer was just trying to save time and, as such, make more money on the warranty repair. It's unfortunate for those who's car is no longer covered under the powertrain warranty as the out of pocket repair is quite expensive. Pricing will vary depending on region and if you're buying the ATF from the dealer, from an e-seller or an independent supplier. Average online price for Mobile 1 Synthetic LV ATF HP blue label is around $110.00 CDN for a case of 6. You'll need 24 qts. / ltrs. Don't know what dealers are selling it for but I would think it's a lot more. Add approximately 3 hours of labour @ $120.00 per hour, again, depends where you are, and the lowest price you're likely to see is around 800.00 CDN. Another option is to try a friction modifier like [URL='https://www.lubegard.com/products/isf/']Lubegard[/URL]. This would be considered an "ounce of prevention" and is, in my opinion, a DIY service. If you do the research, particularly on the large US forums, you'll find that a number of C7 owners have had some success with this approach. This will be my first shot at fixing the "shudder" if / when it occurs. Best regards Ross [/QUOTE]
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Corvette
C7 Forum
A8 Automatic issues wide spread or not?
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