2017 automatic transmission question
Thread Starter
Instructor
Joined: Jun 2017
Posts: 227
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From: Maple Valley Washington
2017 automatic transmission question
Hello, somehow I am under the impression that there is a Sevice Bulleton that will have GM flush the transmissions of all C7's in order to avoid a problem down the road. So I called my Chevrolet Dealer and visited with Service and the lady told me that she had not heard of such a Service Bulleton and that the dealership would not flush my transmission if there are not any symptoms present. Anyone have more information on this? I bought my car new and have 10K miles on it.
Safety Car
Joined: Mar 2018
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Hello, somehow I am under the impression that there is a Sevice Bulleton that will have GM flush the transmissions of all C7's in order to avoid a problem down the road. So I called my Chevrolet Dealer and visited with Service and the lady told me that she had not heard of such a Service Bulleton and that the dealership would not flush my transmission if there are not any symptoms present. Anyone have more information on this? I bought my car new and have 10K miles on it.
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Amazing that dealers do not know about this guidance - they should have been able to just look it up.
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Melting Slicks
Joined: Dec 2011
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From: Western New York
Picture of correction from August 2019
Picture of statement on correction April 2020
Question I have is . Do they now again require diagnosis ? I had my 17 GS done with no diagnosis and was planning on having my Sierra done as well neither vehicle are /were having any problems or symptons . Wanted it done for peace of mind and to not have any costly repairs for Triple Flush after BTB warranty expires.
Last edited by Borntorun04/17; Aug 15, 2020 at 06:09 PM.
Safety Car
Joined: Mar 2018
Posts: 4,754
Likes: 1,650
Picture of correction from August 2019
Picture of statement on correction April 2020
Question I have is . Do they now again require diagnosis ? I had my 17 GS done with no diagnosis and was planning on having my Sierra done as well neither vehicle are /were having any problems or symptons . Wanted it done for peace of mind and to not have any costly repairs for Triple Flush after BTB warranty expires.
Picture of statement on correction April 2020
Question I have is . Do they now again require diagnosis ? I had my 17 GS done with no diagnosis and was planning on having my Sierra done as well neither vehicle are /were having any problems or symptons . Wanted it done for peace of mind and to not have any costly repairs for Triple Flush after BTB warranty expires.
Melting Slicks
Joined: Dec 2011
Posts: 2,509
Likes: 946
From: Western New York
MMD , Thanks I saw that but wasn't sure if they meant vehicle returns meaning returning to dealership or coming back again with shudder after fluid was changed already. Hoping they will do without diagnosis . I will check with dealer next week regarding Sierra.
Thread Starter
Instructor
Joined: Jun 2017
Posts: 227
Likes: 43
From: Maple Valley Washington
Hey, thank you so much. At this time my car does not exhibt shudder, I was thinking that it could happen later. So as I understand it, I would not be able to have GM do the fluid change.
Safety Car
Joined: Mar 2018
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I would get the fluid changed. The oil in your transmission is not what GM recommends any longer. They have moved on. Just tell your dealer the shifting between 1st and 2 gear feels notchy (grabby), I had done this as my transmission was notchy in the first 3 gears. They shouldn't raise a fuss about changing your oil if you ask them. It will take about an hour for them to do this once the vehicle is on the lift.
Melting Slicks
Joined: Dec 2011
Posts: 2,509
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From: Western New York
I would CONTACT dealer about Service Bulletin 18-NA-355 and if your car is under BTB still ask them about doing Triple Flush under warranty. My 17 GS had no symptoms and dealer did triple flush. I will be taking my wife's vehicle in for inspection and will be asking about getting Triple Flush done on my Sierra that also has no symptoms on Tuesday. I want it done for peace of mind and don't want to have cost of repair if it happens later. IF they press me I will say I felt hard shifting once in a while. On my GS they just did Triple Flush. I contacted service manager at dealer regarding my GS.
Last edited by Borntorun04/17; Aug 16, 2020 at 01:49 PM.