caliboigs

One month ago I brought a 2012 c6 grand sport with only 7105 mi on it. I had it two days and the car died on me, it went to missing, idleing very ruff, them reduced power and both the maintenance light and service traction control light came on all within about 2mins. Towed it into dealership...they didn't know what was wrong...car wouldn'trun long enough to read codes they said...so they replaced the motor, rewrote the ecu..come to find out both cats were completely clogged...so they ordered a new exhaust system.. the car was in shop for 22 days...got it back this last Thursday and low and behold car did the same thing cruising at 60mph...towed it back to dealership and today they told me the o2 sensors were bad...but the converters were clogged again...only 78mi on new motor and exhaust...if anyone can tell me wtf is going on with my car, is it common or is it a random act of possessed lemon car?

ATC399

Got to be a lemon...On my sceond C6 with zero major issues...hate to say it but you never know what you are getting buying used...it should be under warranty good luck getting her fixed

caliboigs

Wondering if it is...everyone I talk to has not had such a problem with theirs...ugh hoping they can fix it,take it, or give me another one...well see

e weezie

Can't believe they gave you a new LS3 without even diagnosing a problem! That's crazy. Hope you get it straitened out.

caliboigs

Preston hood said so far they have spent over 15k on a car with 7400 miles...they said Rhys unheard of and they want to find what is going on..so I'm stuck in a Chevy Cruz for now....I guess atleast they gave me a rental.

4SUMERZ

WOW!!!!! Good Luck.
I can't believe they spent $$ on a new engine, and didn't replace the O2 sensors, cats etc, which would of got fouled up when the old engine was running like crap, with the fuel air ratio running who knows how rich. I would think that a new computer to assure that the new engine operates correctly would also be in the mix as well.

I'd be pissed as well..
Hopefully, they will resolve the issues so you can put it all behind you and enjoy this great cruiser...and not a CRUZ

caliboigs

I figured since they put an new exhaust on it they would have put new o2 sensors....I guess I was wrong...

gbrtng

Codes can be read without the engine running - this sounds like an ECU problem or CAN bus issue. You really need someone who understands the electronics and it sounds like they don't.

caliboigs

If they can't figure it out soon, I'm going to ask them if they can send it to a dealership that has Corvette experience...not trying to sound rude but Cmon they are supposed to be a corvette tech

quickcat

What is in the gas tank? A cat failure twice in a row with two different engines sounds like someone put leaded racing gas or sometng like that in the tank. Cats don't fail these days for no reason. I would think there is improper gas in the tank, the engine is passing oil, or fuel is not being burned properly in the engine and is burning in the exhaust (possible vacuum leak).

There has to be a simple answer. Was anything moved over from the first engine to the second? If so it could be the culprit. Have you talked with another shop? Perhaps one that specializes in Corvettes. There is not much about the C6 engine control that is special over anything else on the road these days though.... Sounds like these guys are not troubleshooting effectively if they need the engine to run properly to get codes. Maybe they are not using the right equipment... Either way they should know better.

Matt

caliboigs

I defiantly agree mat, as far as I know, nothing in fuel tank when I bought it it only had 1/8 tank gas then I put shell 93 in it...as Dar as motor the only thing they said they re used was the headers and both o2 sensors.Ill know more tomorrow hopefully..they have a vette tech coming tomorrow to look into it further...either way I know I'm going to atleast need new cats and o2sensors...wondering if the previous owner messed with the fuel setting with a tune or something.

camirocz

Change dealership for your servicing .Obviously someone there doesnt know what they are doing.

Chevy Cust Svc

Oh no!

So sorry to hear about the vehicle concerns. If you wish to open a GM case with us due to your vehicle issues, please contact us privately and include your name, phone number, VIN, and service adviser at the dealer.

Regards,

William R. (assisting Kelly & Marissa)
Chevrolet Customer Care

debo

I couldn't believe that also.

brewcitygymratt

x2 Sorry to hear about the problems with your c6. FWIW, I've had 3 GM's in my life, a 94 vette, 99 z28 and 06 c6. They have been the three most reliable cars I've owned in 30yrs of driving(owned japanese and euro imports too). They were all full bolt-on, with two of the 3 with stall converters. All have been down the track many times and never needed anything but oil/coolant changes, pads/rotors, one set of shocks, one left axle seal(c6) and two new batteries in 16 yrs of GM ownership. The ls1 z28 now has 155000 miles on original motor and original auto trans! I hope you get it all worked out.

C4C5C6

I'd stay with the dealer working on your car.
Pretty soon they will have replaced EVERYTHING..... under warranty.

I'd be happy as a clam (however happy they are) that I was getting all these NEW parts at no cost to me (you).

Let them rebuild the whole car.
Could be the transmission, ya know?
Could be the differential, ay?
Might be one or all of the what? 17 on board computers?

As long as they are ready, willing and able to replace entire, huge/costly sub-assemblies, let them have at it.
Get them to reset the mileage back to ZERO since they will have built you a whole new Vette.

PS: What they are doing is called the "shotgun" method of trouble diagnosis.
That's where the unknowing/unknowledgeable replace everything until they finally hit the right part.

Who are they? I'd like to take my Vette to them and get it completely rebuilt.

PS: Good luck with getting this all squared away. Vettes aren't nearly trouble prone as they may seem when you do have a problem. It's mostly a lack of vehicle specific training by GM.

Hang in there. It will be a GREAT vehicle when one of the buckshot pellets hits the right part causing the trouble AND you get all the rest of the stuff for F-R-E-E !!!!!
Chill out and have patience, they will find the trouble and I'd venture to say your Vette will be trouble free for a long time to come after this fiasco is over.

AWARE02

I would be interested in what the dealership has to say.......

Stan0324

New motor without knowing what the problem is and you want to switch dealers ?

Doesn't sound right to me.

boraxman

I would start pushing for another car, rattle some cages for sure...This one now has a history which will likely affect resale. Good luck!

haljensen

It was USED when he bought it (7105 miles). Nobody "exchanges" a used car for a new one.