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Chevrolet Corvette Transmission Problems

90 messages,  Last post on Oct 26, 2009 at 8:05 PM

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#14 of 90 Re: "tire bark" and related issues [toydriver] by motorhead1 Aug 14, 2007 (3:30 am)
Replying to: toydriver (Aug 13, 2007 10:22 am) Yes you can and there is plenty of power to do just that but I would wait until it gets broke in first.
#15 of 90 Re: "tire bark" and related issues [toydriver] by bolivar Aug 14, 2007 (5:10 pm)
Replying to: toydriver (Aug 13, 2007 10:22 am) The tires on my non-Z51 are known for not putting out any 'squeal' at all. The few times I've really jumped on it from a dead stop, I've heard absolutely nothing. But I do think the tires were spinning.   Therefore, I think second gear noise would be even harder to hear.   Just get in your car, go to the nearest intersection, turn right or left and get on it. Be expecting to totally lose control if you give it much throttle. The car will quickly start to slide the rear end. (The car has so much power it will slide before the traction control can kick in.) And if it is sliding, it means the tires are broken loose. And there will be no noise.   If you wreck your Corvette doing this, don't blame me!
#16 of 90 Re: 2007 Coupe Rear Axle Problems [bolivar] by motorhead1 Aug 15, 2007 (3:45 am)
Replying to: bolivar (Aug 08, 2007 9:49 pm) The Chevy dealer changed the oil in the rear end yesterday and said that they couldn`t hear anything now. I will try tomorrow to see for myself. Maybe this fixed the problem.
#17 of 90 Re: 2007 Corvette Transmission Rattle [billw501] by fredolivo Oct 11, 2007 (9:56 am)
Replying to: billw501 (Apr 24, 2007 1:02 pm) Hello billw501, I was experiencing the same problem. I took it in and filed a complaint with the General Motors Engineering Department. I figured that a 90,000 dollar car with this kind of high performance shouldn't be doing that grinding sound out of first gear or any gear for that matter. The mechanics that over looked my car stated that it's due to the molecules of the metal expand and contract from heat and cold transfer which causes a slight grinding sound. Eventually it will stop or not when the vehicle suffers some wear and tear when the transmission settles or better said be broken in. Unfortunetly these are some of the sacrafices we must make to have such an awesome car. Don't worry about it to much, just turn up your music and you won't hear it, thats what i do. WOLF
#18 of 90 Transmission Delay by beachguy Oct 17, 2007 (12:21 pm)
Just purchased an '08 A6. I noticed that the transmission seams to delay before engaging drive more that I am accustomed too when moving the shift lever from N to D. Putting in reverse is no problem. Is this normal for the A6. Replies to this message: rayainsw (Oct 18, 2007 2:43 am)
#19 of 90 Re: Transmission Delay [beachguy] by rayainsw Oct 18, 2007 (2:43 am)
Replying to: beachguy (Oct 17, 2007 12:21 pm) I have not experienced anything like that in my 2007 A6.... Good luck! - Ray Nearing the 15,000 mile mark....
#20 of 90 New '08 Automatic with grinding noise. Tranny? by tmerriss Nov 10, 2007 (5:28 am)
Help!   I bought a beuatiful blue 2008 Vette with the optional titainium exuast, and auto tranny. I notice a grinding sound coming from the rear of the car at around 3000 RPM if I give it slight acceleration in 1st or second. In thrid however, that sound starts at 2500 RPM, and 4th 5th and 6th it starts at 2000 RPM. Again, I can only notice the sound under some acceleration.   I took it to my local dealership where I bought it. I got mixed reactions. The head mechanic says he thinks it's muffler resin (where I have I heard that before?), which seems to be a conviniant way to explain it away. But I know better...this sound is more serious than that. And resin wouldn't act like that at those RPMs. But wait, it get's better...   The salsmen went for a ride and after hearing it claimed that it is a combination of 4 things! He says it is stiff sidewall EMT tires when I accelerate, plus "power transfer" to the rear, plus "lug noise" (for the higher gears), plus some muffler resin! Wow, with those four things working together at once, ANYTHING can be explained away!   Problem is the dealership that I bought it from has NO CORVETTE EXPERTS. In fact, they even admit they never have even tore into a C-6 before!   I think I will need a new tranny (I hate that), but I'm not sure. What should I do? Drive around from dealer to dealer until I happen to come accross someone who knows what they are doing? Or do I just demand that my dealership honor the warenty and replace the tranny? Or mabey it's not the tranny, but I'm just missing something? I don't know what to do...any help is appreciated thanks. Replies to this message: bolivar (Nov 10, 2007 12:28 pm) billw501 (Nov 10, 2007 4:13 pm) jordan0023 (Dec 28, 2007 8:07 pm)
#21 of 90 the next step by tmerriss Nov 10, 2007 (7:11 am)
Sorry for the double post, but if anybody is reading this, an update:   I just drove it with compotition mode off, and it still makes that grinding sound. Same with traction control off. At this point, I'm also worried about the rear axle. Could it be low on fluid? But if that were the case, wouldn't it make that "sound" all of the time, and not just at certain RPM's? Am I going nuts?   I cannot accpet the generic "well, the sound is probably normal", espicially since I just spent some 55,000 bucks on this car! Ok here is my plan...Monday I will make an apointment and have the dealership put it up on a rack, and check the underside for anything loose...like a muffler bolt or whatever. While up there, I will have them flush the rear-end fluid (which they will probably suggest anyway), and then drive it and see. If the sound continues after that, I will ask them to replace the transmission. Anyway, that's my plan.   Anyone else have any ideas? Replies to this message: rayainsw (Nov 10, 2007 7:24 am)
#22 of 90 Re: the next step [tmerriss] by rayainsw Nov 10, 2007 (7:24 am)
Replying to: tmerriss (Nov 10, 2007 7:11 am) I have 15,500+ miles on my 2007 A6.   My only suggestion is that ( given what you say above regarding the [ lack of ] Corvette expertise in servicing C6s ) is immediately cancel your appointment with this dealer & start talking with other dealers - and take your C6 to one with Corvette tech(s). My $0.02 worth... - Ray Bought local, but from a dealer with 2 techs that ONLY work on Corvettes...
#23 of 90 Re: New '08 Automatic with grinding noise. Tranny? [tmerriss] by bolivar Nov 10, 2007 (12:28 pm)
Replying to: tmerriss (Nov 10, 2007 5:28 am) Well, since it is an automatic, and there is a noise in all gears, and it is a noise under acceleration, my wild guess would be the rear differential.   I think some of your speeds are strange. At 2000 rpm in 6th, you would be doing what, 90+mph? Can you really hear a minor rear end noise at that speed.   Overall, my recommendation would be just drive the car until the noise is something that can't be ignored and can easily heard by the service rep or mechanic. After all, these thing are under warranty, and it has a 100,000 mile driveline warranty. And, after a few chips and scratches, you will feel better about leaving it at a dealer for a few days while they tear out and replace the ring and pinion gears.

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