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Local Chevy deal contradicts owner's manual service recommendations
My local Chevy dealer is contradicting the service recommendations in my 2023 C8 Z06 owner's manual. Would love some insight into who is right and why.
Context, I have a 2023 C8 Z06 with 7,600 miles. I did a pre-cautionary oil, oil filter, and transmission DCT filer change at 500 miles.
Owner's manual strongly recommends DCT filer change at 7500 miles, even claiming failure to do so can constitute grounds for voiding the warranty ("The transmission external canister filter must be changed at 12 000 km (7,500 mile) during the break-in period. Failure to replace the external canister filter can cause damage to the transmission and potentially void any warranty"). It also recommends tire rotation at 7500 miles.
The local Chevy dealer, in contrast, told me changing the DCT at 7500 miles isn't necessary "unless you're tracking the car" (I'm not). She also said they don't rotate C8 tires.
Kind of surprised a Chevy dealer is contradicting the Chevy manual. Wanted to hear some thoughts.
My initial thought is, although I don't want to waste $750 (what they quote for DCT filer replacement), I don't want to give Chevy any excuse to later deny a warranty repair. So if that's a maybe-necessary, maybe-not-necessary item, I'll probable err on the side of caution and get it done, especially if it keeps the warranty valid.
As far as tire rotation, I figure the extra treadwear justifies the cost. But, a subquestion about exactly how that works, obviously the front and rear are staggered sizes so traditional front-to-back rotation is impossible. I've read the tires are non-directional so side-to-side rotation is possible. However, I read in at least one forum (and am looking for positive confirmation or refutation), that although the tires are not directional they DO have a designated inside and outside. Do I understand correctly then that a side-to-side rotation involves dismounting the tires from the rims and remounting them to the opposite rim? Because just moving the right rim and tire to the left side would still keep the outside of the tire on the outside of the car. I've never heard of a tire rotation involving unmounting and remounting tires but that does, in fact, seem to be what others are describing so I wanted to see if I understand that right.
I would try another dealer. The DCT service is explicitly required in the manual regardless of if the filter was changed prior to reaching 7500. The rotate is also in the manual and cannot see why this dealer is having simple comprehension issues but it happens all the time so you are not alone. The tires are unidirectional, can run in either direction, so all the dealer has to do is rotate them from side to side.
I would try another dealer. The DCT service is explicitly required in the manual regardless of if the filter was changed prior to reaching 7500. The rotate is also in the manual and cannot see why this dealer is having simple comprehension issues but it happens all the time so you are not alone. The tires are unidirectional, can run in either direction, so all the dealer has to do is rotate them from side to side.
She is close on one thing: you cannot actually rotate the tires due to size so they just swap side to side and that is at 7500 mile. The manual states that the first swap is most important and I think that is because it lets the tech check for unusual tire wear.
I was offered a free tire swap but discussing with the tech during an oil change, he examined the tire wear at 5,000 km and said its perfect so don't swap them.
Ask the dealer to put in writing that the DCT filter does not need to be changed at 7500+/-500 miles. It could save you some money now at the risk of some hassle if you have DCT problems and perhaps less of a resale value.
The tires should be rotated side to side per the owner's manual and the dealer gets compensated for that during the 7500 mile service if it is done within 2 years. Ask them to put in writing that the owner's manual is incorrect and they don't need to be rotated.
Or find another dealer.
Follow the manual for service intervals. Failure to do so would be grounds for termination of your warranty.
Ask your dealer these questions: If I follow your recommendations and not those of GM, and GM voids my warranty, will your company provide warranty work on your dime? Will you put that in writing?
My local Chevy dealer is contradicting the service recommendations in my 2023 C8 Z06 owner's manual. .......Owner's manual strongly recommends DCT filer change at 7500 miles, even claiming failure to do so can constitute grounds for voiding the warranty ("The transmission external canister filter must be changed at 12 000 km (7,500 mile) during the break-in period. Failure to replace the external canister filter can cause damage to the transmission and potentially void any warranty"). .......The local Chevy dealer, in contrast, told me changing the DCT at 7500 miles isn't necessary "unless you're tracking the car" (I'm not)....... Wanted to hear some thoughts..
I see you have a 2023 model. In 2024 the manual added wording that clarifies what "at 7,500 miles" means - and it says "The initial transmission external canister filter change must be performed at 12 000 km (7,500 mi). This service can be complex. See your dealer. ‐ If the canister filter is replaced more than 800 km (500 mi) prior to the initial 12 000 km (7,500 mi) break in period, the filter still needs to be replaced again within 800 km (500 mi) +/- the 12 000 km (7,500 mi) service interval." Its more than a recommendation, it says "must". And it is very clear that even if done early it must be done again between 7,500 miles. This same wording has also been added to the actual Service Manual and its applicable to all years. That is, if the tech looks at an updated Service Manual for 2023, it will show this this wording.
I had my 2021 DCT filter changed at 2500 miles using the free service. My dealer specifically advised me that I must still have it change again at 7,500 miles (which I have not yet reached). But I will have it done between 7000-8000 miles in accordance with the requirements in both the owners and service manuals.
My thought is you should have it done anyway, and consider a different dealer if necessary. Did you talk directly with a tech , or just the service adviser? The tech can see the requirement in the Service Manual on line. Its hard to ignore really.
Interesting t says "initial" and "must.". To me this is saying DO NOT change the external filter before 7.5kM and the "must" means mandatory, you have to, specifically, no allowances. Interesting wording.
"The initial transmission external canister filter change must be performed at 12 000 km (7,500 mi)."
Let me add that people saying voiding warranty or terminating warranty, it doesn't work that way. They don't void it or terminate your warranty, they decline warranty repair or service.
Interesting t says "initial" and "must.". To me this is saying DO NOT change the external filter before 7.5kM and the "must" means mandatory, you have to, specifically, no allowances. Interesting wording.
"The initial transmission external canister filter change must be performed at 12 000 km (7,500 mi)."
Let me add that people saying voiding warranty or terminating warranty, it doesn't work that way. They don't void it or terminate your warranty, they decline warranty repair or service.
Correct. Generally a warranty claim for specific repair can be denied for cause without voiding the warranty on the entire vehicle. There are cases where a warranty has actually been "blocked", which sounds like a total void. And, in fairness to those that use the term void, the manual actually uses the term in several places, and one instance is specifically related to the DCT filter replacement (but I agree it does not mean the entire warranty is voided). The warranty manual also uses the term void - on parts damaged due to aftermarket parts.
I would try another dealer. The DCT service is explicitly required in the manual regardless of if the filter was changed prior to reaching 7500. The rotate is also in the manual and cannot see why this dealer is having simple comprehension issues but it happens all the time so you are not alone. The tires are unidirectional, can run in either direction, so all the dealer has to do is rotate them from side to side.
Thank you JDSky and everyone else for the helpful feedback. Regarding the tires, have you heard anything similar to what I read in the other forum that the factory tires have a designed "inside" and "outside" edge? I'm familiar with the simple concept of a unidirectional tire that can be rotated to the other side (verses a directional tire that can't because it would be rotating the wrong direction). But I've never heard of the concept of rotating the outside edge of a tire to the inside edge (which could only be accomplished by unmounting the tire and remounting it to the opposite rim). Wondering if this is really a thing or just some mis-information.
Thank you JDSky and everyone else for the helpful feedback. Regarding the tires, have you heard anything similar to what I read in the other forum that the factory tires have a designed "inside" and "outside" edge? I'm familiar with the simple concept of a unidirectional tire that can be rotated to the other side (verses a directional tire that can't because it would be rotating the wrong direction). But I've never heard of the concept of rotating the outside edge of a tire to the inside edge (which could only be accomplished by unmounting the tire and remounting it to the opposite rim). Wondering if this is really a thing or just some mis-information.
Yes, the tires are asymmetric, meaning the inside and outside tread is different. But if you swap the tire / wheel assembly from one side to the other, the outside is still the outside. You do not want to unmount the tires and swap them so the inside tread becomes the outside. If someone is advocating that, I would put them on your ignore list.
I haven't seen anyone on MECF suggest doing that, however. What "other forum" are you referring to.
You should have received a "customer acknowledgement form". This tells you what included services you are entitled to. As the manual states you must get that transmission filter replaced at 7,500mi to retain Warranty.
Hardly unique to Vette/Gm. I've seen this at every dealer I've been at for the last 20-years... at least. Follow the Manual by the ones who built the car, document fully, and drive on.
Yes, the tires are asymmetric, meaning the inside and outside tread is different. But if you swap the tire / wheel assembly from one side to the other, the outside is still the outside. You do not want to unmount the tires and swap them so the inside tread becomes the outside. If someone is advocating that, I would put them on your ignore list.
I haven't seen anyone on MECF suggest doing that, however. What "other forum" are you referring to.
It was here on Corvette Forum, just on another thread. I'm trying to find it again and can't relocate it at the moment. As you pointed out, if you simply rotate the tire on the rim, the outside is still the outside. The poster said this led to cupping on the edge of the tire (don't recall if he said the outside or inside edge) due to Chevy camber settings even when properly aligned. He claimed remounting the tires so that the outside actually become the inside eliminated this cupping. I reached out to Michelin for confirmation. Still awaiting their response.
It was here on Corvette Forum, just on another thread. I'm trying to find it again and can't relocate it at the moment. As you pointed out, if you simply rotate the tire on the rim, the outside is still the outside. The poster said this led to cupping on the edge of the tire (don't recall if he said the outside or inside edge) due to Chevy camber settings even when properly aligned. He claimed remounting the tires so that the outside actually become the inside eliminated this cupping. I reached out to Michelin for confirmation. Still awaiting their response.
What did you ask Michelin to "confirm"? The tires are definitely asymmetric, with the INSIDE and OUTSIDE clearly marked in the sidewalls.
I looked at the description of the both the Summer Tire and the All Season Tire on TireRack and on the Michelin site. It is an asymmetric tread, with a defined outside and inside. I looked at my summer tires (which I removed) and they are marked on both sides INSIDE and OUTSIDE. And, the Michelin Pilot Sport All Seasons currently on my car are also marked, in the sidewall, OUTSIDE and INSIDE. It will really be a surprise if Michelin tells you its ok to reverse them.
The tires are definitely asymmetric, with the INSIDE and OUTSIDE clearly marked in the sidewalls.
I was traveling and didn't have access to my car to look at the tires. Michelin confirmed they have a designated outside and inside edge. Which, as you pointed out, now that I'm back home, I now see on the tire itself. But I did't have the option of looking at the tire when I posted the question.
I think the confusion in the other thread came from people wrong using "asymmetrical" to mean "non-directional" when those terms aren't opposites. Tread is either directional or non-directional and either symmetrical or asymmetrical. A directional tread pattern can be either symmetrical or asymmetrical. The person in the other thread was wrongly stating the tires can be rotated to the other side because they're "asymmetrical". No, they can be rotated because they are "non-directional". The fact that they're asymmetrical means, as you pointed out, when you put them on the other side, they'll still have a designed outside and inside edge.
He seems to have confused "non-directional" with "symmetrical" thinking, just because they don't have a directional tread pattern that automatically means they have a symmetrical tread pattern. So what I read was one person's mistaken opinion that he could lengthen the tread life of his tires by turning them around (and maybe it does) but his tires are not mounted the way Michelin intended so he's certainly not getting optimal performance from them.
04-22-2024, 09:17 PM
Local Chevy deal contradicts owner's manual service recommendations
I’d go to another dealer.
