SPOHN do you have a lift at home to do your oil/filter changes?

 

Yes I do. 2 point lift. The absolute best investment ever. When playing with cars for well over 20 years and tracking for about 10 with my dad a lift is priceless. Best tool ever bought. Set of tires cost more than a lift. lol

 

Super nice!! Do you think it would be really hard to change oil/filter on my back using floor jack setting all 4 wheels on blocks?

 

Absolutely not. The oil filter and drain bolt are relativity close. Once you’re under there jacked up and all four corners set with jack stands it’s all right there. Here’s a good video that shows it all.

 

Can we please get this back to C8 Problems?

 

thanks

 

Brake Issue. I guess it's still unresolved for the Corvette? https://carbuzz.com/news/chevrolet-s...raking-problem

 

scary posts,we are ready to order a stingray thru our local dealer but these experiences are making us to think about it

 

Anything get resolved on the gear whine? Mine has that too...

 

Working with GM customer support. Dealer basically drove one other car that a guy at the dealership owns, one week after he drove mine, and said this car has it too. Ridiculous. Even if it does have it, a sample of two only proves that both samples have it, not that it's normal behavior for the car, and further, one week apart isn't going to allow him to make a decent comparison of noise level/symptoms in any case. Dealer filed a TAC but mischaracterized me (stated in TAC that I'd said it was a minor whine, which is BS, I said it was loud, annoying, and can be heard over the radio!), in response to which GM said this is normal. Very unimpressed and unhappy, they're trying to wash their hands of it, but I'm going to take it back in after the holidays and try again. Will update when I get some news.

 

Ok - Good luck. I have a client who just got his... When I see him next I want to go for ride to see if his has the whine too.

 

Check the stitching alignment at about 1:47.

 

OMG, the funniest part is that he keeps says " everything is stitched" over and over and over several times while the camera is facing the misaligned panel.

That HAD to be intentional !

Hilarious.

 

I'm normally NOT a defender of GM, but I'm pretty sure this is one of the early C8's. I've seen 3 C8's recently including mine which I took delivery on 12/29 and the stitching is/has been PERFECT! Thumbs up to GM for paying attention and getting it right.

 

The social media folks at GM whose email I got from this thread are not proving to be of any help. Basically they're trying to act as go-betweens between me and the dealer, which quite frankly is worthless, I can call the dealer and make arrangements myself.

The girl I'm dealing with has steadfastly ignored my questions about why in the TAC that the dealer filed with GM and in which GM supposedly came back and said this was "normal" behavior, it is supposedly a "normal" sound.

For one, I cannot see how how they could have made this determination without having heard the noise (there are a number of potential whines that could originate in a rear end of a vehicle with the transaxle back there) or ridden in the vehicle. So, I want to know more, like for example, how do they know this is "normal"? So my questions are:

1. why is it "normal? what is the root cause of the issue? (i.e. if they know it to be "normal", they ought to be able to explain what is actually causing it) and
2. why is it "normal" for a vehicle to exhibit the exact same symptoms of a bad differential gear set up? "A howl or whine during acceleration over a small or large speed range is usually caused by worn ring and pinion gears or improper gear set up."
2. why, if it is "normal", it was not present on the vehicle from day 1 but only showed up (or at least became noticeable, it is fighting the tires on these concrete roads for the loudness crown) around 700 miles.

Sent these questions twice now, and both times they were ignored. I posed them again today, not holding my breath. She has refused several requests to simply put me in touch with anyone at GM Tech to discuss this issue. In short, they're simply stonewalling and providing no help whatsoever.

Every question I've asked her about this has been resoundingly ignored. I finally got fed up and requested name of her supervisor and regional service manager. This is ridiculous.

 

I realize this may not be what many want to hear, but legally the dealer should be your only contact. It is the agent of GMC, although the dealers are more than happy to dodge responsibility by sending you after GMC directly.

 

1400 miles & no issues so far. With that said, watch out for your rubber O-rings when you take the top off. After several miles with the top down I noticed a black rubber o-ring sitting on the passenger's seat. Luckily it fell in the car & not on the ground. I pulled over & put it back on without any problems. I've had the top off several times without any issues. I'll also say the cabin noise is pretty minimal at highway speeds if your windows are up.

 

If and when I get my car, my dealer will get an email within hours of my discovering an errant O ring, a whine, or anything else. Keeping records and ensuring the dealer knows you are doing so will pay big dividends down the road. Because I'm doing a courtesy delivery, I'll notify both the home and courtesy dealer at the same time, and let them figure out where the buck stops. In light of my having sent the courtesy delivery fee to the home dealer, which then sent it off to the courtesy dealer, I'd say the home has appointed a sub dealer, obviously with the approval of GMC.

 

Z51 brakes developed a nasty squeal at 6k miles. Apple Carplay stopped recognizing my phone.

 

Well, the reason I got GM involved is that their Tech support told my dealer that this sound is "normal". I don't think it is, particularly when it's listed as a common symptom of a diff that's not been set up properly, and at least I think I deserve an explanation from GM as to what causes this "normal" issue, why it's not present from 0 miles if it's normal, etc...this thing ain't cheap, but they're sure not offering me a whole lot of reassurance here.