Where to Buy FFL-4 & Filter

[F1ROB]

Hi Folks:

I'm looking to do my own DCT Fluid and Cannister Filter replacement - yes, i like to do these things myself.

Calling around, i am blown away by the price of the AC Delco FFL-4 fluid - it is 50% more than i paid at this dealer in mid 2024, and the filter is >$300. I know most people have the dealer service their cars, but for those that have done it themselves, was wondering where you purchased these items?

I have seen rockauto.ca has a good price, but is that shipped from a Canadian warehouse, or out of the States? Obviously don't want to get hit with a major tarriff/brokerage fee.

Anywhere else you can suggest i look for a "better" price? Ideally shipping from Canada.

Cheers,

Rob

 

[Vetteboy21]

Don't do it if you value the power train warranty. If the DCT packs it in you're on your own.

 

[F1ROB]

Don't do it if you value the power train warranty. If the DCT packs it in you're on your own.

Why donyou say that? Dealer cannot deny warranty if you do the work yourself, with the correct fluids...or if you use non-delco fluid, but the correct spec.

 

[cdnz]

tubmangmpartsdepot.ca

 

[dyoung]

I got a filter from Tubman in Ottawa in Nov. of 24.

Cost with freight and tax was $205.00. Part # 24045729.

I keep it as a spare as sometimes the dealer may not have one in stock.

I wouldn't do the filter change myself because I have no way of controlling the TX to circulate the fluid through the TX which is apparently required with a filter or fluid change.

You need to get a look at a service manual to see what the process is.

After writing this I see you responded in the sticky at the top of this page about filter change requirements.

Looks like you may have already done one on your car.......carry on.

 

[Rocket Rob]

Did a filter and trans oil “flush” and fill myself and documented on iPad video. Bought the filter and trans fluid from Tubman GM parts and a Foxwell OBDII reader online that accomplishes the flush procedure. All in wasn’t $800.00. And I still have the Foxwell reader that does a variety of GM vehicles. Warranty can’t be denied if the work was done properly ( hence the video for proof).
“

 

[cdnz]

All you need to know about DCT service. Tranny flush proceedure starting at 15:00. I will do mine often and bring my in to the dealership for warranty interval services. That just me.

 

[Hanko_]

Here's a copy/paste from my post from April, 2025;

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.