First oil/trans fluid change?
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,005
Likes: 12,393
From: NE South Carolina
^^^^
There will be many more Threads on the subject as there have been unless GM adds a statement about how to deal with early DCT filter changes. My "Guess IF" they ever do it will say, "Like making early engine oil changes were you are instructed to reset the OLM, for early DCT filter changes add the mileage where the DCT filter was changed to 7500 for the next DCT change, them follow...."
Doubt they will, they like to chuckle as some of us post suggestions!
There will be many more Threads on the subject as there have been unless GM adds a statement about how to deal with early DCT filter changes. My "Guess IF" they ever do it will say, "Like making early engine oil changes were you are instructed to reset the OLM, for early DCT filter changes add the mileage where the DCT filter was changed to 7500 for the next DCT change, them follow...."
Doubt they will, they like to chuckle as some of us post suggestions!
Safety Car
Joined: Jul 2019
Posts: 4,079
Likes: 2,414
From: Florida
^^^^
There will be many more Threads on the subject as there have been unless GM adds a statement about how to deal with early DCT filter changes. My "Guess IF" they ever do it will say, "Like making early engine oil changes were you are instructed to reset the OLM, for early DCT filter changes add the mileage where the DCT filter was changed to 7500 for the next DCT change, them follow...."
Doubt they will, they like to chuckle as some of us post suggestions!
There will be many more Threads on the subject as there have been unless GM adds a statement about how to deal with early DCT filter changes. My "Guess IF" they ever do it will say, "Like making early engine oil changes were you are instructed to reset the OLM, for early DCT filter changes add the mileage where the DCT filter was changed to 7500 for the next DCT change, them follow...."
Doubt they will, they like to chuckle as some of us post suggestions!
Here ya go. Hopefully this helps.
Safety Car
Joined: Jul 2019
Posts: 4,079
Likes: 2,414
From: Florida
Just try to get as close as you can. Easy peasy
Last edited by bhvrdr; Mar 13, 2023 at 02:46 PM.
Racer
Joined: Jul 2006
Posts: 444
Likes: 56
From: DeBary Florida
This link may be helpful to everyone RE: DCT filter, Oil & Oil filter change. I did the first one myself have an appointment next month to have the Oil & DCT filter done. I called to be sure they had the DCT filter in stock. The tech said they did but only one and it takes about 1 - 1 1/2 weeks to get one in. Wanted to make sure they have one for me. I'll be calling a week out before my appointment to be sure there's one their along with the 0w-40 ESP. Here's the link from GM Tech Line. Hope it helps.
https://gm-techlink.com/?p=15781
https://gm-techlink.com/?p=15781
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,005
Likes: 12,393
From: NE South Carolina
You're certainly not required to follow what GM recommends and they are not required to warranty their components if you don't. It's totally a free country but hopefully that does clarify for you where they stand on early changes.
Just try to get as close as you can. Easy peasy
Just try to get as close as you can. Easy peasy
I'm not concerned for myself as I am installing my 2nd new filter this coming August with all DCT Fluid change. Will defend my decision as supported by my GM C8 Trained Tech this past August, who did the 1st year DCT flush and filter change. BUT it needs to be clear for all or these many Threads on the subject will continue along with frustration for some.
SIDEBAR
Been there and have been able to get:
- Clutch pressure plate covered on my few month old 1st new car a 1967 Chevy. Required having the GM Area Service Manager look at the defect I found in the broken pressure plate casting that caused the break (GM policy, clutch is not covered.) The surface of the pressure plate as well as the clutch disk looked new there was no abuse. Dealer Service Manger agreed with me BUT said we'll have to leave car apart and show to GM Service Rep when he visits. Rep agreed.
- Biggest $ issue was a dif in '74 260Z when warranty was about up but I proved the ring gear bolt clip was "probably" not properly installed. Used "wording" from the Service Manual! Bolt came lose, head sheared on dif case and went thru and made hole in case. All dif fluid ran out! Showed with Macro pics, gears were perfect and ring gear bolt end that sheared was a ductile failure it was not a defective bolt. The Service Manual (which I had bought) said IF dif cover is off check that ring gear bolt clips are in place! Never a reason to take case cover off. Had to drop dif to remove cover as is was next to frame member. Proved to me they knew there was a manufacturing issue with the ring gear bolt clips. Dealer nor US Datsun would cover the cost of replacement, which in fact had they looked could have been easily fixed. Sent metallurgical report, with many pics of prefect no abuse gears, broken bolt showing is was a ductile failure not a defective bolt etc. Pointed out the Service Manual words. Sent with hand written letter in Japanese, by my Japanese Lab Division Head to Nissan President in Japan indicating they were lucky no one was injured! Was reimbursed in full. Worth the effort as cost of the dif replacement was ~20% of purchase price of 260Z!
- Last was my 6 month old C6 where dealer service manger said GM won't cover hole in AC Condenser, just like a paint chip, was "probably cause by rock." Had new one installed. However he helped by showing pics and short report I make after examining the defect in AC Condenser. The AC Condenser was bent right where there was a defect that leaked. Suggested it was "probably dropped" prior to being installed, which weakened the heat exchanger tube wall and it finally failed. Suggested it may have been done at the manufacturer not at BG as was somewhat difficult to see! Dealer Service Manger showed my short report with pics to his GM Service Rep and got the $800 paid for new one reimbursed IN FULL.
Was told GM would not cover hole in AC Condenser as, like a paint chip, "probably" caused by a rock. I showed with pics it was "probably" caused when Condenser was dropped before being installed! My "probably" trumped theirs and got the $800 I paid for new one reimbursed. Note added an AC Condenser "protector" for the new one- just in case, For C8 did not wait for a rock, added before!
Last edited by JerryU; Mar 14, 2023 at 09:14 AM.
Intermediate
Joined: Mar 2023
Posts: 43
Likes: 5
I did mine at GM reco, 7500mi for both. Oil the tech said could do earlier. I also requested they add 2 extra qts of tranny - of course I'd pay for the fluid. They said $400. It turns out the tranny fluid refresh (with filter) is $400. So, it turns out the port to fill the extra two qts isn't the same servicing port for the std 11 qts of tranny fluid. My "feelings" were hurt until i learned that - and the amount of work necessary to add the two extra qts!
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Instructor
Joined: May 2021
Posts: 122
Likes: 64
From: W. PALM BEACH FL
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,005
Likes: 12,393
From: NE South Carolina
Yep. One more time for fun and avoiding the Owner's Manual confused words (on this and other stuff!)You only should change engine oil and filter WHEN THE OLM STATES. That will display on the dash at ~10% Oil Life Left and say change due. That will display EVERY TIME you start the car and count down with life left. YOU MUST press OK to have the message go away! Can't miss it.
The OLM considers many things NOT just miles (heck we're not back to the 1960's when only the Odometer and time were what we had as measurement indicators.) GM confounded the engine oil change words with the required DCT filter change at 7500 miles for some foolish reason. My C7's and C6 just said change when the OLM says! That IS what the C8 Owner's Manual states as well!
Now if for whatever reason you want to change earlier do it and reset the OLM. The OLM does include a measure that actually considers oil temp after cold starts. My last Vette, before the OLM, was a '93. Since all we had was an Odometer and Time it stated as I posted below -Change at 3000 miles OR 3 MONTHS WHICHEVER OCCURS 1ST. So IF you have a garage queen that most drives are 2 to 4 miles going to the Country Club on weekends it will reduce that min 12 months to less!
PERHAPS WHY skevette WITH 1020 MILES FEELS LIKE IT'S TIME FOR THE 1ST CHANGE! 
PIC from 1993 Vette Owner's manual BEFORE the OLM.
Last edited by JerryU; Jun 23, 2023 at 08:55 AM.