C8 transmission filter service

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23 2LT Z51 mag
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I dropped my '23 C8 off at the dealers today for my 2nd free oil change, and the GM letter said to have the tranny filter serviced also, before 12,000 km. (I'm at 11,400)
I see some posts saying it's complimentary, others quoting 700-900 CAD. Dealer told me 950 plus tax. What's the distinction between free/900?
 
First DCT change with a 2023 is on GM if within 2 years of delivery date. The 2023’s do not have a mileage requirement that came in with the 2024+ C8’s.
I believe it's +- 500 miles or 800 KMs
It's written somewhere but I can't find it right now.
 
First DCT change with a 2023 is on GM if within 2 years of delivery date. The 2023’s do not have a mileage requirement that came in with the 2024+ C8’s.
I took delivery in May, '23, so I am within 2 years. The work is being done at this moment, I'll ask at the service desk when I pick up the car later today.
 
Nice, you are perfectly within GM’s mileage window for a new DCT filter. Sorry, I wrote my post quickly before the coffee set in this morning thinking everyone knows about the required 12,000 km +/- 800 km for a DCT change. Many 2023 owners were pressed by dealers to burn the free filter at the first oil change when mileage was nowhere close to 12K, so owners made the adjustment and paid that initial oil service out of pocket to drive further and bank the next oil change & DCT filter on service visit #2 sometime before the two year period expired.
 
I asked why some customers got it free, she showed me the letter listing the work scheduled, there was no line for a free dct filter, that some letters had.
But the kicker was; $292 for the filter. Amazon has an *identical* one, same part number, 24045729, for $28. I'll be doing the next one myself. I watched a YouTube clip to see what was involved,, seemed to take only 20-30 minutes if you had power tools. The book rate of 3.5 hours is big time exorbitant.
Bill was $1050 with tax.
 
I asked why some customers got it free, she showed me the letter listing the work scheduled, there was no line for a free dct filter, that some letters had.
But the kicker was; $292 for the filter. Amazon has an *identical* one, same part number, 24045729, for $28. I'll be doing the next one myself. I watched a YouTube clip to see what was involved,, seemed to take only 20-30 minutes if you had power tools. The book rate of 3.5 hours is big time exorbitant.
Bill was $1050 with tax.
Call conciergerie ,if you are sure you did it in the correct time and mileage frame. My dealership did mine for free and I wasn't exactly in the recommended mileage.
 
I asked why some customers got it free, she showed me the letter listing the work scheduled, there was no line for a free dct filter, that some letters had.
But the kicker was; $292 for the filter. Amazon has an *identical* one, same part number, 24045729, for $28. I'll be doing the next one myself. I watched a YouTube clip to see what was involved,, seemed to take only 20-30 minutes if you had power tools. The book rate of 3.5 hours is big time exorbitant.
Bill was $1050 with tax.
Take the home office letter to them.
Plus it's mentioned here in the tech link post.

1745532643884.webp
 
Thanks, Murray. Under Reminder, it says "filter replacement ... at the time of their first oil change". This was my 2nd oil change. That may be why I didn't get the freebee.
I did go to GM's site and complained under "contact us". Will see if that does anything.
I will print both the Tech Link page and the letter and visit the service dept again.
 
I asked why some customers got it free, she showed me the letter listing the work scheduled, there was no line for a free dct filter, that some letters had.
But the kicker was; $292 for the filter. Amazon has an *identical* one, same part number, 24045729, for $28. I'll be doing the next one myself. I watched a YouTube clip to see what was involved,, seemed to take only 20-30 minutes if you had power tools. The book rate of 3.5 hours is big time exorbitant.
Bill was $1050 with tax.
I too will do my own filter when the time comes, likely the spring of 2027.
However I will not get the filter from Amazon no matter what the price. Too many cheap knockoffs sold by crooks.
Buy the filter from GM, you are saving a ton of money anyway doing the work yourself.
Just my 2 cents...
 
I too will do my own filter when the time comes, likely the spring of 2027.
However I will not get the filter from Amazon no matter what the price. Too many cheap knockoffs sold by crooks.
Buy the filter from GM, you are saving a ton of money anyway doing the work yourself.
Just my 2 cents...
I tend to agree. The $28 one will be a cheap knockoff. But, I will shop around different GM sources. I previously found red seat belts for $300 cad, rather than pay the dealer $695 to add the option. It took 30 minutes to install them.

As for the 3.2 hours book rate, there a total of 39 bolts to re & re. It takes less than 5 seconds each x 2 with power tools. 6.5 minutes. Add 10 min to lift the car, 5 min to pull the filter cover, 5 min to replace 2 "O" rings. How do they get to 3.2 hours? At $180/hr.

EDIT
mygmparts.ca, $160.97 for the 24045729 filter
 
Last edited:
As for the 3.2 hours book rate, there a total of 39 bolts to re & re. It takes less than 5 seconds each x 2 with power tools. 6.5 minutes. Add 10 min to lift the car, 5 min to pull the filter cover, 5 min to replace 2 "O" rings. How do they get to 3.2 hours? At $180/hr.
You forgot the 20 minute coffee break and the 30 minute poo break. ;)
 
For anyone planning to do a filter change, I've been searching for a good deal for a genuine GM filter, part 24045729.
Best I see in Ontario is True North Chev, a GM dealer in North bay, ON. $155.12 thru Parts dept, but they also sell on eBay,
Genuine GM Automatic Transmission Fluid Filter Kit 24045729 | eBay (https://www.ebay.ca/itm/405131694468) for $124.39 cad plus $4 shipping.

~$40 seems to be the going "good" price for 19418016 fluid from a few sources.

You'll need 2 Torx pattern sockets, E8 and E16 as well as 10mm and 13mm 6 point, cordless driver/ratchet, and extension.

I'm convinced that it won't take anywhere near the 3.2 hours gm book time.
 
For anyone planning to do a filter change, I've been searching for a good deal for a genuine GM filter, part 24045729.
Best I see in Ontario is True North Chev, a GM dealer in North bay, ON. $155.12 thru Parts dept, but they also sell on eBay,
Genuine GM Automatic Transmission Fluid Filter Kit 24045729 | eBay (https://www.ebay.ca/itm/405131694468) for $124.39 cad plus $4 shipping.

~$40 seems to be the going "good" price for 19418016 fluid from a few sources.

You'll need 2 Torx pattern sockets, E8 and E16 as well as 10mm and 13mm 6 point, cordless driver/ratchet, and extension.

I'm convinced that it won't take anywhere near the 3.2 hours gm book time.

Great information Hanko , thanks for doing the search and posting , it is much appreciated . I am also doing the transmission work on my wife’s 2022 this month .
Please both of you document how it goes. I won't be doing it for several years since I purchased the service agreement, but once that ends it will still have to be done as others will.
 
The Milton dealer did mine just last week, so I'm good for a while. I did the research to gauge just how bad I was ripped off.
I printed the documents you provided, Murray, thanks. I'll take them to the dealer today.
I also have GM looking into it, a lady named Shelley asked for more details.
Ya, sorry I forgot that. I don't know why everyone doesn't get the scheduled service contract. It's cheap comparatively. I wish I knew about it before I got the first canister change. Would have saved me $800
 

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