View Poll Results: Rear Diff groan by the numbers | |||
I have NEVER had the groan | 135 | 27.22% | |
I have the groan and need to take the car to the dealer | 211 | 42.54% | |
I have changed the diff fluid and do not have the groan | 39 | 7.86% | |
I have changed the diff fluid and the groan returned | 53 | 10.69% | |
I have changed the rear diff completely and do not have the groan | 11 | 2.22% | |
I have changed the rear diff completely and HAVE the groan | 26 | 5.24% | |
I have changed the diff fluid more than once and do not have the groan | 5 | 1.01% | |
I have changed the diff fluid more than once and have the groan | 8 | 1.61% | |
I have changed the rear diff completely more than once and do not have the groan | 3 | 0.60% | |
I have changed the rear diff completely more than once and HAVE the groan | 5 | 1.01% | |
Voters: 496. You may not vote on this poll |
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05-07-2018, 03:20 PM | #141 |
Drives: 18 zl1 Join Date: Aug 2017
Location: central alabama
Posts: 935
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I was told that the bulletin stated to drain and fill dif, do 5 figure 8s. Do that whole process up to 5 times. If that didn't work, new dif.
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05-09-2018, 12:40 PM | #142 |
Drives: 16' 2SS, 06' Silverado SS Join Date: Jul 2017
Location: Columbus, OH
Posts: 345
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anyone have the specific TSB for the fix?
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05-09-2018, 12:46 PM | #143 |
Drives: 18 zl1 Join Date: Aug 2017
Location: central alabama
Posts: 935
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05-09-2018, 05:42 PM | #144 |
Drives: 2017 2SS A8, 2018 Macan GTS Join Date: Sep 2017
Location: New York
Posts: 134
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The second flush at the dealer seems to have eliminated the groan. Fingers crossed it stays that way
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05-09-2018, 06:13 PM | #145 |
Drives: 18 zl1 Join Date: Aug 2017
Location: central alabama
Posts: 935
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According to what they did to mine, it says "rear diff fluid needs to be drained and refilled per 17-na-287"
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05-10-2018, 10:21 AM | #146 |
Drives: 2016 Camaro 2SS, 1967 Firebird Join Date: Nov 2017
Location: Northern Nevada
Posts: 43
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I took my 2016 in yesterday for the groan - they gave it back to me as no problem found. I provided them the GM documentation on the issue, but could not locate the TSB if there is one?
My issue presents when the temperature is low, so I can understand not being able to duplicate, but I would think the low cost of a fluid change would have been good customer service. The service writer was very dismissive and just told me I have plenty of warranty left, because my time is obviously worth nothing to them. |
05-10-2018, 10:34 AM | #147 | |
Drives: 18 zl1 Join Date: Aug 2017
Location: central alabama
Posts: 935
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Quote:
Mine started only in cold weather, never in warm weather. It progressed to where it did it when the car itself was not warmed up, even in 70 degree weather for the first few turns |
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05-10-2018, 01:29 PM | #148 | |
Drives: 2016 Camaro 2SS, 1967 Firebird Join Date: Nov 2017
Location: Northern Nevada
Posts: 43
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Quote:
I meant low cost for them - 2 quarts of gear oil is less than $30 to them, plus 20 minutes of time. Even at $165 it's low cost in my mind to take care of a customer who spent in excess of 40,000 on a vehicle. It's terrible customer service. |
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05-10-2018, 01:36 PM | #149 |
Drives: 18 zl1 Join Date: Aug 2017
Location: central alabama
Posts: 935
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oh yes. yes. even if it cost them $180, your point is still valid
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05-11-2018, 07:32 AM | #150 |
Drives: 16' 2SS, 06' Silverado SS Join Date: Jul 2017
Location: Columbus, OH
Posts: 345
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well they basically told me sorry about your luck and there is nothing we can do and nobody to escalate it to.
after the first two flushes making it worse and not only making a groan but now a grinding noise on right turns they tell me "its a characteristic of the vehicle." |
05-11-2018, 07:58 AM | #151 | |
Drives: 18 zl1 Join Date: Aug 2017
Location: central alabama
Posts: 935
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Quote:
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05-23-2018, 04:26 AM | #152 | |
Drives: 2016 Camaro Convertible 2SS Join Date: Jan 2016
Location: Mass
Posts: 756
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Quote:
__________________
2SS Convertible, MRC, NPP, A8, Garnet Red, Blk Bowties
GM CAI, Ported TB, Kooks Headers, E85 |
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06-10-2018, 07:20 AM | #153 | |
Drives: 2016 2SS Join Date: Aug 2016
Location: Ohio
Posts: 68
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Quote:
Well if they all do it I guess it is a characteristic.... Kidding Mine does it and I'm not really worried about it any longer |
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06-12-2018, 11:41 AM | #154 |
Drives: 2018 2SS & 2002 1500HD Join Date: Jan 2018
Location: California
Posts: 9
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My 2018 is doing it. Especially first drive of the day turning left, which is what I do every time I leave the house...
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