09-13-2017, 11:49 PM | #1 |
Drives: '17 Camaro SS Join Date: Mar 2017
Location: California
Posts: 74
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A8 Transmission
I took my car to the dealership because the downshift when braking slowly is a bit rough, especially at 20 mph ( downshift to 2nd gear). The mechanic went for a ride with me and he said its the computer doing that and he cant do anything about it, any ideas?
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09-14-2017, 12:02 AM | #2 |
Drives: 2015 2SS Join Date: Aug 2017
Location: Texas
Posts: 349
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Last edited by Cameron27; 06-06-2019 at 10:24 PM. |
09-14-2017, 12:04 AM | #3 |
Drives: '17 Camaro SS Join Date: Mar 2017
Location: California
Posts: 74
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yea I was hoping it wasnt a common issue, now I must use manual shifting when am down shifing then
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09-14-2017, 12:15 AM | #4 |
Mine under hard acceleration or downshifting at highway speeds shifts violently from 4th to 5th. Dealer said they couldn't find an issue.
It shifts so hard from 4th to 5th under WOT that it spins the tires. I should make a video of this nonsense. |
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09-14-2017, 12:18 AM | #5 |
Drives: 2015 2SS Join Date: Aug 2017
Location: Texas
Posts: 349
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Last edited by Cameron27; 06-06-2019 at 10:24 PM. |
09-14-2017, 03:50 AM | #6 |
Drives: '17 Camaro SS Join Date: Mar 2017
Location: California
Posts: 74
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while breaking slowly I put it in tiptronic to check what gear it did that on, saw it was 3rd to 2nd,but yea I meant full automatic downshifiting
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09-14-2017, 05:07 AM | #7 |
I have noticed that my auto never downshifts to 2nd, it's always 3rd to 1st, even in performance mode.
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09-14-2017, 05:27 AM | #8 |
Drives: 2016 Camaro LT1 RS Black on Black Join Date: Apr 2017
Location: San Bernardino, CA
Posts: 269
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There is a software update for the tranny/ecu. My 16 RS was a GM Buyback so when I bought it I had my dealer check it all out and they confirmed it had the update. Maybe check and see if they need to apply it to yours. Mine shifts really smooth unless U pushed it into performance mode
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NowAChevyGuy 2016 RS - Trifecta Tuned, 3.23 diff swap, Borla S Type, JMS Throttle Controller, Lambo doors, Monster stereo, GM LED rear tail lights, BMR swaybars/End Links/Trailing Arms, tinted dark and murdered out.[/br] Car kicks ass! $20k.. and I get 20mpg with my foot in it, everywhere I go!.... Say somethin about V6's now... |
09-14-2017, 11:17 AM | #9 |
Drives: HB 2SS Join Date: Apr 2017
Location: Vancouver, BC
Posts: 518
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09-14-2017, 07:08 PM | #10 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,201
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I swear gm programs their transmissions to randomly downshift to hard and randomly upshift inconsistently hard. The worst part about it is that you don't know how it's going to shift next time.
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09-14-2017, 09:46 PM | #11 | |
Drives: '17 Camaro SS Join Date: Mar 2017
Location: California
Posts: 74
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Quote:
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09-15-2017, 10:09 AM | #12 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,201
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Looks like they did a relearn. It might make the shifts feel different for a little while but it will adjust back to its usual behavior. I've never owned a non gm transmission long enough to observe the shift behavior but I really do think the way gm programs the shift quality and timing dosent optimise smoothness.
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10-06-2017, 09:35 PM | #13 |
Drives: 2015 2SS Join Date: Aug 2017
Location: Texas
Posts: 349
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Last edited by Cameron27; 06-06-2019 at 10:15 PM. |
11-21-2017, 02:09 PM | #14 |
Drives: 2016 2SS Convertible Join Date: May 2012
Location: St. Louis, MO
Posts: 1,711
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I believe there is a TSB to reprogram shifting on the T4/V6 A8 transmission. If your Camaro doesn't have the update then you might want to check with the dealer about getting it.
I believe the A8 can be put into a "relearn" mode where it will recalibrate the shifts but I don't know if that will fix the problem or (as stated above) the transmission will just revert back to the way it is now. I would take it back to the dealer and let them test drive with their diagnostics running to see if they notice a problem with the torque converter or transmission that is causing the problem. |
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