It's a low profile Torx Plus socket.

Some people have purchased regular Torx Plus sockets and ground them down.

 

​​​​​​

E Torx Star Female Bit Socket "E16"

 

Problem I have with 7,500 mile service is the Dealer has no Transmission Fluid.
GM has none in stock, nor any other Local to area Dealers either. 2 weeks ago. Not sure if they had a filter in stock or not.
Hope was to be able to get 2 get shipped in ion 2 weeks,. I'll have to check to see if Dealer had a filter, in stock or not, as that was not mentioned.

 

Would not be so sure lots of different words in various documents but no big deal. Even with 1000 miles in 10 months the OLM will show 17% oil life left. For my early 2014 C7 Z51 dealers would not give you a free oil change until the OLM said <20% life left. I plan to have my oil/filter and DCT filter changed at 11 months when the OLM will show 9% oil life left!

From my experience with 2 C7's, expect dash warning when there is ~10% oil life left! Can look at any time yourself. Just have to be sure it's NOT after 12 months.

 

Perhaps, but I've never seen a document from GM posted that states there is a minimum OLM requirement for the C8. But I've seen a lot of GM documents posted concerning the first free oil change that don't mention a minimum OLM requirement.
At any rate, there have been several people that got the free engine oil and filter change with the OLM above 20%. And I don't think the dealers would do it if they weren't getting reimbursed from GM.
My recommendation is try another dealer if they refuse to do it because you haven't reached 20% life.

 

^^^
Would wonder why you would want to get the oil changed at say 9 months (25% oil life left) and not wait until at least 10 months? Guess if you want to waste the free change AND not get the DCT filter changed at the same time OK. But as many have done, pay for the ~500 mile oil change if hat makes you sleep better at night (IMO not needed) then the free change just before the car 12 months and get the DCT filter chaged free as well.

 

Actually, that's not correct. They use E Torx Plus which has a different internal shape. I bought these at O'Reilly Auto Parts.

 

I agree but the problem would be with people that did an early oil change on their dime and reset the OLM. If the car isn't driven much and the oil change was done several months after the car was purchased then the OLM may not be down to 20% when the first year is about to expire.

 

No need. I’m at 6700 miles and under 20% on OLM. #notawaxer.

 

Not only did I have to school my tech on how to correctly read the oil dipstick (i.e., hot idling engine), I just now realized he must have reset the transmission fluid life monitor at the same time as the oil life monitor. At 3,400 miles and 6 months the TFM is at 93%. OLM now at 90%. Oil changed 1,000 miles and four weeks ago.

 

window sticker says you get first maintenance visit, at least it does on mine.

Anybody get that free tire rotation they mentioned in that service? I'm going to guess they copied and pasted that which means they probably spent Zero time really understanding if the vehicle needs special requirements. So topping off vs not topping off is debatable.

Also, not sure why anybody would want to change oil early: unless they have high idle time, track time at long high RPM, or the vehicle oil is getting more towards the one year mark before the 7500 because oil products do have a shelf life, etc....
However,
I can make a good case for frequent oil changes for those that trust somebody else to do it: they aren't draining as much oil as possible. clearly they aren't determining where the lowest point is on the drain pan, such as back right and then lift on the front left,and let it drip for several minutes. You'd be surprised how much extra oil comes out. Helps prevent slug build up in the bottom of the pan. But fast and frequent oil changes don't prevent overfilling which is equally harmful. With this said, throw money at it and say you care, or if you really care, do it yourself. Why: Because if you really care you will want to know exactly how much came out, how much went in, what it looked like, and that you got as much of the old oil out as you possible could. Dealership mechanics don't really care about your car, I don't trust them to use the correct oil unless I can see the bottle and them putting it in as well as knowing it wasn't on the shelf for a long time.

 

Apparently they copied and pasted it from the owners manual, it's a good read, highly recommended.

 

it's pretty comical on some topics, pretty useful on others. i meant they probably copied and pasted parts from another vehicles etc since we can't rotate the tires unless we want to drive backwards. ofcourse the maintence part I have yet to read, that's what I got this forum for, lol.

 

Might want to look at the manual before you say can't and drive backwards.

 

[QUOTE=Phil1098;1603568083]Might want to look at the manual before you say can't and drive backwards.

Interesting, I'll give you this one.
I mean i guess if they will take them off the rim and move them, I'll buy that idea. If they do that first maintenance then I'll be happy to let them do it if they can do it guaranteeing they won't scratch the rim. My local dealership wouldn't even let the guys drive the car into the garage, not who i purchased from. I wonder how many people option for this and if they really see any abnormal wear? The C7s and C6s I'm sure are comparable so they should be experienced enough.

 

[QUOTE=jeffsmith2139;1603568237]Tire “rotation” is the same as the “rotation” was on the C7. The tires (and wheels) are swapped to opposite side. No need to remove tires from wheels!

 

[QUOTE=Tin-can;1603568293]i learned something new again. These tires do say "outside" but are not directional such as the tires on my other vette with aftermarket wheels and tires and the Viper. but then again i never bought Michelin pilot sport 4s. Thanks.

 

Several years ago, I posted here on the Forum that when I did oil changes on my C7, I would pull the oil filter and drain plugs before turning in for the night, then I’d replace the filter, drain plugs and add oil the next morning. I mentioned I liked letting the oil drain overnight. I can’t tell you how many “crazy emoticon” ( ) responses I got. I was told the difference between letting the oil drain for 10 minutes vs 12 hours was negligible, maybe an ounce or two at most. I ignored those comments and continued to let the oil drain overnight when I did my own oil changes. The way I looked at it was - what’s the harm? I’m sleeping anyway so it’s not like I could be driving it…

 

[QUOTE=jeffsmith2139;1603568367]Yep, can get confusing. Have had both types. Asymmetrical but not Directional, like the C7 and C8. Wider tread on the outside and different side wall construction and even rubber compound inside then out BUT not directional. They are just labeled OUTSIDE. Have to be sure when a new tire is mounted the OUTSIDE is outside!

Then there are Directional that may or may not be Asymmetrical. Those that are both, i.e compound or construction difference inside to out are labeled with an arrow identifying way they must rotate AND Left or Right. No way to rotate with different sizes front and back!

 

If this is in reference to the service manual shots I posted above, yes, there are two procedures that must be performed before and after changing the DCT filter. And the level check procedure is correct as well.

Before changing the filter:

After the filter change:

Fluid level check: