What 64 owners told NHTSA about the 2015 Chevrolet Corvette

WHEN THE VEHICLE IS IN MOTION, AT A CONSTANT HIGHWAY SPEED, 40 TO 70 MPH,ANY ACCELERATION OR DECELERATION, CAUSES THE CAR TO VIBRATE FOR SEVERAL SECONDS. I FEEL THIS IS A SAFETY ISSUE BECAUSE, AT TIMES, DURING THE 'SHUDDER' EVENT, THE CAR WILL LUNGE FORWARD.GM HAS DIAGNOSED THE PROBLEM AS 'SHUDDER' AND HAS ISSUED A SERVICE BULLETIN. THE FIX THEY RECOMMEND IS A COMPLETE TRANSMISSION FLUSH AND FILL WITH AN UPGRADED TRANSMISSION FLUID. I AM ASSUMING THE OEM FLUID IS DEFECTIVE. THIS CONDITION IS NOT AN ISOLATED EVENT. IT HAPPENS ALMOST EVER TIME SPEED IS ACCELERATED OR DECELERATED. MY VEHICLE ONLY HAD 5600 MILES.

NHTSA ODI 11389576

SLOW DOWN SHIFT. WHEN YOU HIT THE ACCELERATOR WHILE THE CAR IS DOWN SHIFTING, THERE IS A 2 SECOND DELAY. I CAME OFF EXPRESS WAY AND TURNED ON TO ROAD THEN HIT THE GAS TO MERGE INTO A LANE WHEN THERE WAS A 2 SECOND DELAY. VERY DANGEROUS. HOW DO I FIX PROBLEM? WHY IS CHEVROLET NOT FIXING PROBLEM.

NHTSA ODI 11387722

I HAVE A 2015 CORVETTE STINGRAY WITH 35K MILES. THE VEHICLE HAS BEEN TO THE DEALERSHIP 2 TIMES ALREADY ONCE AT 11K MILES AND SECOND TIME AT 22K MILES WHERE THE CAR SHOULD SHUDDER WHILE CRUISING AT LOW SPEEDS. ALSO IN THE MORNING DURING A COLD START WHEN I WOULD SHIFT THE CAR FROM PARK INTO REVERSE THEN THE CAR WOULD DO A HARD SHIFT. TWICE THE DEALERSHIP CHANGED THE FLUID IN THE TRANSMISSION AND REBUILT THE ENTIRE TRANSMISSION SINCE THE CAR WAS UNDER WARRANTY. BUT MY CAR'S EXTENDED WARRANTY EXPIRED ON 03/01/20, IN 06/01/20 THE ISSUE CAME BACK. NOW GM IS REFUSING TO TAKE RESPONSIBILITY TO FIX THE VEHICLE. WHEN REFUELING, TANK FILLER PIPE ACCEPTS FUEL ONLY VERY SLOWLY. SEVERAL DIFFERENT GAS STATION PUMPS WERE TRIED, ALL KEPT CLICKING OFF EVERY 3 SECONDS (AS IF TANK WAS FULL). TANK WAS EMPTY TO TAKE IN SEVERAL MORE GALLONS OF FUEL.

NHTSA ODI 11374886

TRANSMISSION SHIFTS HARD BETWEEN FIRST AND SECOND, INTERMITTENT SHUDDER EVERY 2 TO 3 SECONDS WHEN DRIVING DOWN ROAD AT NORMAL HIGHWAY SPEEDS COMING FROM TRANSMISSION

NHTSA ODI 11374300

2015 Z06 CORVETTE CRACKED 3 REAR WHEELS (20" DIAMETER). ONE AT 24,000 MILES, ONE AT 30,000 MILES AND ONE AT 40,000 MILES. CAR IS ONLY DRIVEN TO WORK ON INTERSTATE QUALITY ROADS. NO IN TOWN DRIVING. ALL WHEEL CRACKED ON THE INSIDE. THE CRACKS STARTED AT THE OUTER EDGE, DOWN THE RIM, THEN TOWARD THE CENTER OF THE WHEEL. WHEN THE CRACK PROPAGATED PAST THE OUTER BEAD OF THE TIRE, THE WHEEL STARTED LEAKING AIR. I HAVE TWO OF THE CRACKED WHEELS PRESENTLY. NONE OF THE WHEELS ARE BENT.

NHTSA ODI 11363910

A8 TRANSMISSION SHUDDER. HAD FLUID CHANGE AT 10305 MILES. AT 10881 MILES PROBLEM IS NOW WORSE THAN BEFORE. WARRANTY IS NOW EXPIRED . HOPEFULLY GM HAS A REMEDY FOR THIS PROBLEM ON 2015 CORVETTE. HAVE OWNED FIVE CORVETTE. THIS MAY BE THE LAST ONE GM NEEDS TO STAND BEHIND THEIR PRODUCT.

NHTSA ODI 11362308

WHEN REFUELING, TANK FILLER PIPE ACCEPTS FUEL ONLY VERY SLOWLY. SEVERAL DIFFERENT GAS STATION PUMPS WERE TRIED, ALL KEPT CLICKING OFF EVERY 3 SECONDS (AS IF TANK WAS FULL). TANK EVENTUALLY TOOK AN ADDITIONAL 7 OR 8 GALLONS, BUT IT TOOK 8 OR 10 MINUTES TO ACCOMPLISH THAT.

NHTSA ODI 11353918

TSB 18-NA-355 - VEHICLE IS EXPERIENCING A SHAKE AND/OR SHUDDER DURING LIGHT THROTTLE ACCELERATION BETWEEN 25 AND 80 MPH (40 AND 128 KM/H) STEADY STATE DRIVING WHEN TRANSMISSION IS NOT ACTIVELY SHIFTING GEARS. THE EXPERIENCE IS SIMILAR TO DRIVING OVER RUMBLE STRIPS OR A CONCRETE ROAD SURFACE WITH ROUGH EXPANSION JOINTS. TOOK TO DEALERSHIP TO REPAIR, BUT THEY ARE STATING THE WARRANTY ENDED IN JANUARY AND REQUIRING ME TO PAY FOR THE FIX. WILL JOIN THE CLASS ACTION LAWSUIT.

NHTSA ODI 11322769

WHEEL RIM CRACK AT BEAD AND LEAKS AIR. IT A WIDELY KNOW ISSUE, AND I HAVE BECOME A STATISTIC. I HAVE READ THERE MAY BE A CLASS ACTION AGAINST GM FOR SUCH ISSUE.

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THE VEHICLE IS EQUIPPED WITH AN 8L90 AUTOMATIC TRANSMISSION. IT HAS A SEVERE SHUDDER PROBLEM WHEN CRUISING DOWN THE ROAD AT 50 TO 70 MPH. CAN GET ALMOST UNDRIVABLE. ALSO WILL NOT UPSHIFT AFTER A PERFORMANCE DOWNSHIFT. DEALER FLUSHED TRANSMISSION PER GM BULLETIN BUT PROBLEM IS STILL THERE. LOOKS LIKE ALMOST ALL OF GM 8 SPEED TRANSMISSIONS HAVE THIS PROBLEM CIRCA 2015-2016.

NHTSA ODI 11241123

EXPERIENCED THE EXACT SAME WEIRD CRACKED WHEEL THAT MANY OTHER C7 OWNERS HAVE EXPERIENCED ON 7/11/19. NO SPECIFIC POTHOLE. JUST CRACKED WHEEL WHICH LOOKS LIKE ALL THE OTHERS ON THE CORVETTE FORUM.

NHTSA ODI 11231824

CRACKED REAR WHEELS ON BOTH SIDES. NOTICED BECAUSE OF AIR LEAK AFTER LONG TRIP.

NHTSA ODI 11219771

SEAT BELT PRETENSIONER ON THE PASSENGER SIDE DEPLOYED (SOUNDED LIKE A SHOTGUN BLAST IN THE CABIN) WITHOUT PROVOCATION. NO ACCIDENT, DID NOT RUN OVER ANYTHING, ETC. GOING STRAIGHT ~45MPH ON AN EMPTY STREET AT 12:50AM. SMOKE BILLOWING OUT OF THE CABIN OF MY CAR, ALL THE LIGHTS WERE ON, BELLS WERE RINGING, ETC. IT'S AS IF I WAS IN AN ACCIDENT, BUT NO AIRBAGS DEPLOYED. FRIGHTENING EXPERIENCE! GM SAID IT IS NOT THEIR PROBLEM.

NHTSA ODI 11189784

BOTH OF MY OEM REAR WHEELS (SPECTRA GRAY - 10 SPOKE), HAVE DEVELOPED CRACKS REQUIRING REPLACEMENT AT MY EXPENSE. DESPITE MY CORVETTE BEING ON WARRANTY AND A HIGH PERFORMANCE, SPORTS CAR WHICH IS REGULARLY SERVICED, THE CHEVROLET DEALERSHIP REFUSES TO REPLACE THESE WHEELS, EXCEPT AT MY EXPENSE, CITING THAT POOR ROAD CONDITIONS IN CALIFORNIA ARE BLAME FOR THE FRACTURES, RUNNING HORIZONTALLY ON THE RIM LIP. THE FRACTURES CREATE A VERY DANGEROUS SITUATION GIVEN HIGH TORQUE LEVELS, LOW PROFILE TIRES WITH A WIDE STANCE. THE TIRES AND THE SUSPENSION ARE DESIGNED FOR HIGH PERFORMANCE, AND HIGH G FORCE, BUT WHEELS ARE APPARENTLY FLAWED FOR THE DESIGNED TOLERANCES IMPOSED BY DRIVING A HIGH PERFORMANCE CORVETTE. MY CAR RAPIDLY LOSS AIR PRESSURE AT FREEWAY SPEEDS AND THE AIR PRESSURE WARNING LIGHT ACTIVATED IN BOTH OCCASIONS, WARNING OF THE HAZARDOUS CONDITION.

NHTSA ODI 11166176

I'VE ALMOST BEEN HIT TWICE PULLING INTO TRAFFIC ON A CITY STREET WITH THIS CAR. SHIFTING WHEN THE TRANSMISSION IS COLD INTO 2ND GEAR FROM 1ST GEAR IS NEAR IMPOSSIBLE AND APPEARS TO BE A KNOWN PROBLEM BASED ON MY INTERNET SEARCH. SEVERAL TIMES I'VE PULLED INTO TRAFFIC AND COULDN'T SHIFT IT INTO 2ND GEAR. BY THEN THE CAR IS SLOWING DOWN WITH TRAFFIC BEARING DOWN ON IT AND YOU HAVE TO SLOW DOWN EVEN MORE TO GO BACK TO 1ST GEAR. THE LOCAL DEALERSHIP SAYS THIS IS NORMAL BUT I DISAGREE BECAUSE IT'S A SAFETY ISSUE. I HAVE TO REV THE ENGINE HIGHER AND GO DIRECTLY INTO THIRD GEAR TO PROTECT MY LIFE.

NHTSA ODI 11155964

WHEN I TOOK THE CAR INTO A DISCOUNT TIRE STORE TO HAVE NEW TIRES PUT ON THE BACK AT ABOUT 15,600 MILES ON THE CAR CRACKS WERE FOUND ON THE INSIDE RIM WHERE TIRE BEAD SEALS OF BOTH BACK WHEELS. PROBLEM WAS IMMEDIATELY REPORTED TO DEALER WHO VERIFIED CRACKS, BUT DEALER AND GM REFUSED TO REPLACE UNLESS I PURCHASE NEW WHEELS FOR DISCOUNTED PRICE OF $1,100.00 FOR REAR WHEELS ONLY. SPOKE WITH REPRESENTATIVES OF GM ENGINEERING AND FOUND PROBLEM IS A KNOWN ISSUE WITH REAR WHEEL CRACKING GOING BACK SEVERAL YEARS WITH CAST CHINA MADE WHEELS ON CORVETTE Z06 AND ZR1 MODELS. I WAS TOLD GM CORVETTE CHIEF ENGINEER HAS POSTED INFORMATION ON THE WHEEL CRACKING PROBLEM ON CORVETTE FORUM AND ONLY WAY TO NOT HAVE WHEEL CRACKING PROBLEM ON REPLACEMENT WHEELS WOULD BE TO NOT DRIVE ON ROADS WITH BUMPS OR POT HOLES. THEY AGREED THIS WAS NOT REALISTIC BUT GM STANDS FIRM ON PAYMENT FOR NEW WHEELS WITH NO ASSURANCE THIS WILL SOLVE THE PROBLEM. MY COMPLAINT WAS CLOSED AT GM AS CUSTOMER DECLINED REDUCED PRICE OFFER AND IS DISSATISFIED. CRACKING WHEELS SHOULD BE A MAJOR SAFETY CONCERN AND ESPECIALLY WITH CARS THAT HAVE THIS MUCH POWER TO THE WHEELS AND ARE CAPABLE OF THE SPEEDS THESE MODEL CARS CAN OBTAIN. THIS IS TOTALLY IRRESPONSIBLE OF GM TO ALLOW THIS TO HAPPEN AND NOT RECALL THE WHEELS AND REPLACE THEM WITH ONES THAT DO NOT CRACK, ESPECIALLY ON CARS WITH SUCH LOW MILEAGE.

NHTSA ODI 11131647

WINDSHIELD IS DELAMINATING. DELAMINATION HAS CAUSED A STRESS CRACK TO DEVELOP. THERE IS NO EVIDENCE OF A STONE OR OTHER PROJECTILE IMPACTING THE WINDSHIELD. THESE CONDITIONS HAVE BEEN VERIFIED BY THE CHEVROLET DEALER WHERE THE CAR WAS PURCHASED AFTER INSPECTION BY THE SERVICE LANE MANAGER AND THE SERVICE DIRECTOR. CONDITION NOTICED WHEN WASHING THE CAR.

NHTSA ODI 11130191

WHILE DRIVING THE DRIVER SIDE REAR SUSPENSION COLLAPSED TO THE STREET. THIS HAPPENED IN TRAFFIC AT ABOUT 40MPH. WE WERE TRAVELING ON HWY 24 NE IN COLORADO SPRINGS HEADING TO HOME NEAR KANSAS CITY. AS DESCRIBED IN A RE CALL WITH 43 OTHER CORVETTES THE RECALL NOTICE NHTSA CAMPAIGN NUMBER: 15V031000. BUT OUR 2015 WAS BUILT ON AUG 12 2014 AND IS NOT INCLUDED. WE HAD JUST COMPLETED AN 8 DAY DRIVE THROUGH MANY COLORADO MOUNTAIN ROADS WHICH WITH THIS KIND OF FAILURE WOULD CERTAINLY HAD THE POTENTIAL OF KILLING MY WIFE AND ME. WE ARE EXTREMELY LUCKY THAT THIS HAPPENED AT A LOW SPEED IN A STRAIGHT LINE. SEVERAL DAYS BEFORE THIS HAPPENED WE HAD A SUSPENSION UPGRADE SOFTWARE ONLY ON OUR CORVETTE. WE DID HAVE SOME SYMPTOMS OF EXTRA SWAY WHEN ROUNDING CORNERS, BUT WHEN WE PUT THE DRIVE MODE TO TRACK THIS WENT AWAY. HAD WE KNOWN THAT THE SYMPTOMS WERE NOT RELATED TO THE SOFTWARE UPGRADE WE WOULD HAVE TAKEN THE CORVETTE TO A DEALER WHILE WE WERE ON VACATION.

NHTSA ODI 11119281

2015 CORVETTE STINGRAY Z51 - 8 SPEED AUTOMATIC TRANSMISSION TORQUE CONVERTER. WITH ONLY 7,500 MILES ON THE CAR IT STARTED TO RUN JERKY AND RPMS WOULD FLUCTUATE FOR NO REASON (ESPECIALLY AT HIGHWAY SPEEDS WHEN FULLY WARMED UP). OFTEN FELT LIKE DRIVING ON A WASHBOARD DIRT ROAD. AFTER A COLD START, THERE WAS A DELAY AFTER SHIFTING INTO DRIVE. WHEN IT ENGAGED AFTER SEVERAL SECONDS IT WOULD DO SO VIOLENTLY, LURCHING THE CAR FORWARD SUDDENLY. DEALER DIAGNOSED FAULTY TORQUE CONVERTER AS DEFECTIVE AND A KNOWN PROBLEM WITH THESE TRANSMISSIONS. AFTER LESS THAN 2,000 MILES THE SYMPTOMS RETURNED AND THE DEALER AGAIN REPLACED THE TORQUE CONVERTER. SO NOW I'M ON MY 3RD DEFECTIVE TC. AFTER 1,700 MILES, SYMPTOMS RETURNED AGAIN! DEALER SAID THAT CHEVROLET AND GM HAVE ORDERED A STOP ON REPLACING THE TC'S SINCE NO FIX WAS AVAILABLE. GM ADVISED TO DRAIN AND FLUSH TRANNY, REFILLING WITH MOBIL1 TRANSMISSION FLUID. THIS SEEMED TO WORK (ONLY FOR A LITTLE LONGER) BUT IS WORRISOME BECAUSE IN THE FUTURE SERVICE, A TECHNICIAN WILL LIKELY REFILL WITH GM FLUID, NOT MOBIL1. ESPECIALLY IF A SECOND OWNER. NOW AT 16,100 MILES THE SYMPTOMS ARE RETURNING! JERKINESS, SLAMMING INTO GEAR AFTER A DELAY ON COLD STARTS. GM SEEMS TO HAVE TURNED THEIR BACK ON STINGRAY OWNERS BY KICKING THE CAN DOWN THE ROAD BEYOND WARRANTEE (WITH THE MOBIL1 "BAND-AID FIX"). ON THE FORUMS THERE ARE SO MANY OWNER COMPLAINING ABOUT THIS SAME ISSUE. I AM AMAZED THAT THERE IS NO OFFICIAL INVESTIGATION RESULTING IN A RECALL. THIS Z51 LT3 STINGRAY WAS $75,000 OTD! FOR THIS COST WE SHOULD BE ABLE TO EXPECT A QUALITY VEHICLE AND A MOTOR COMPANY THAT STANDS BEHIND IT! CAN SOMEBODY PLEASE HELP US WITH THIS SERIOUS AND POTENTIALLY DANGERIOUS PROBLEM?

NHTSA ODI 11113946

I HAD MY VEHICLE SERVICED AT DAN VADEN CHEVROLET IN SAVANNAH, GA ON 16 OCT 2017 AT (12,200 MILES). MY MAIN CONCERN WAS A SHUDDER AND JERKY MOTION THE CAR STARTS DEMONSTRATING WHILE IN MOTION, ACCOMPANIED BY FLUCTUATING ENGINE RPMS. AFTER RESEARCHING ON THE INTERNET THERE ARE 1000'S OF ISSUES WITH THESE TORQUE CONVERTERS AND WHO KNOWS WHAT ACCIDENTS THESE FAILURES HAVE CAUSED. THERE SHOULD BE A TOTAL RECALL ON THESE TRANSMISSIONS. A SERVICE DEPARTMENT TECHNICIAN TEST DROVE MY VEHICLE AND CONFIRMED AND DOCUMENTED MY CONCERNS AND STATED IT WAS OKAY TO DRIVE ? I AM SCHEDULING ANOTHER SERVICE AT (13000 MILES). A SEARCH OF THE INTERNET WILL FILL YOU FULL OF FACTS ON THESE FAILURES. PROBLEMS WITH THE TORQUE CONVERTERS WITH THESE HIGH END VEHICLES ARE WELL ON THE WAY TO BECOME ANOTHER CORVETTE ISSUE OF EPIDEMIC PROPORTIONS. PLEASE ASSIST.

NHTSA ODI 11100441

PLEASE SEE SNIP FROM HTTP://CORVETTEC7FIASCO.BLOGSPOT.COM/2016/02/THOUSANDS-OF-2015-AND-2016-CHEVROLET.HTML THOUSANDS OF 2015 AND 2016 CHEVROLET CORVETTE C7 STINGRAY AND C7 Z06 WITH DEFECTIVE 8L90 8-SPEED AUTOMATIC TRANSMISSION, WITH NO HELP FROM GENERAL MOTORS FOR THE OWNERS BACK IN 2014, THIS BLOG PREDICTED A VARIETY OF PROBLEMS RELATED TO THEN UPCOMING 8L90 TRANSMISSION, ONE OF THOSE SOUNDING ON PAPER IDEAS, AS LONG AS THE EXECUTION DELIVERS ON THE PROMISES. SO FAR, THE VARIETY OF PROBLEMS RELATED TO THE NEW +GENERAL MOTORS 8L90 EIGHT SPEED AUTOMATIC TRANSMISSION WAS ALREADY MIND BOGGLING: FROM EXPECTED OVERHEATING ISSUES, FAILING FLEX PLATES, VARIETY OF LEAKS AND SOFTWARE RELATED ISSUES, ALL THE WAY TO RIGHT DOWN SCARY CASES OF TRANSMISSION VOLUNTARILY "INSPIRING" NEW CORVETTES TO REV UP AND ATTEMPT TO TAKE OFF. HOWEVER, WHAT WAS MISSING WERE THE PROBLEMS WITH THE TORQUE CONVERTER. APPARENTLY, THIS IS NO LONGER THE CASE AND IN FACT, THE TORQUE CONVERTED PROBLEMS ARE WELL ON THE WAY TO BECOME ANOTHER CORVETTE ISSUE OF EPIDEMIC PROPORTIONS, FURTHER ERODING ALREADY WEAK FAITH THE HARDCORE CORVETTE BUYERS MAY HAVE IN +GENERAL MOTORS AND THE EVER POPULAR +TADGE JUECHTER . AS EXPECTED, THE UNDERSIZED AND HIGH SPINNING TORQUE CONVERTER ISSUES MANIFEST THEMSELVES IN A SHUDDER AND JERKY MOTION THE CAR STARTS DEMONSTRATING, ACCOMPANIED BY FLUCTUATING ENGINE RPMS. HOWEVER, HERE LIES THE BIG PROBLEM: THE SAME SYMPTOMS CAN BE EASILY ASSOCIATED WITH THE EVER POPULAR AFM FORCING THE NEWEST CORVETTE INTO 4 CYLINDER MODE. THERE ARE 1000'S OF ISSUES WITH THESE TORQUE CONVERTERS AND WHO KNOWS WHAT ACCIDENTS THESE FAILURES HAVE CAUSED. MY CAR IS IN THE SHOP FOR 1 WEEK FOR THE REPAIR, THANK GOD IT WAS COVERED BY WARRANTY.. THERE SHOULD BE A TOTAL RECALL ON THESE TRANSMISSIONS.. A SEARCH OF THE INTERNET WILL FILL YOU FULL OF FACTS ON THESE FAILURES.

NHTSA ODI 11090885

TL* THE CONTACT OWNS A 2015 CHEVROLET CORVETTE. WHILE DRIVING VARIOUS SPEEDS, THE REARVIEW MIRROR DISPLAYED A BRIGHT BLINDING LIGHT THAT OBSTRUCTED THE DRIVER'S VIEW. IN ADDITION, THE LIGHT CAUSED A REFLECTION ON THE WINDOWS OF THE VEHICLE AND THE CONTACT COULD NOT SEE OUT OF THEM. ORR CHEVROLET IN FORT SMITH, ARKANSAS WAS MADE AWARE OF THE FAILURE AND STATED THAT THE CONTACT SHOULD PLACE A PIECE OF TAPE OVER THE LIGHT SENSOR. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT ENOUGH PEOPLE HAD NOT COMPLAINED ABOUT THE FAILURE FOR IT TO BE A RECALL. THE FAILURE MILEAGE WAS APPROXIMATELY 12,000.

NHTSA ODI 11062165

TL* THE CONTACT OWNS A 2015 CHEVROLET CORVETTE. WHILE THE CONTACT WAS HAVING TIRES INSTALLED AT BILL STASEK CHEVROLET (700 W DUNDEE RD, WHEELING, IL), HE WAS INFORMED THAT ALL THE RIMS WERE CRACKED AND THE REAR PASSENGER WHEEL WAS LEAKING. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS APPROXIMATELY 13,466.

NHTSA ODI 11035178

A STRONG FUEL ODOR IS COMING FROM THE FUEL FILLER PIPE. THE FUEL ODOR FILLS THE GARAGE WHEN THE CAR HAS BEEN SITTING IN THERE OVERNIGHT, AND COMPLETELY TURNED OFF. THE AUTHORIZED CHEVROLET DEALER SERVICE DEPARTMENT HAS TRIED TO FIX IT TWICE, BUT HAS NOT BEEN SUCCESSFUL. VEHICLE IS STATIONARY.

NHTSA ODI 10910962

JUST AS YOU ACCELERATE, AROUND 1200 TO 1500 RPM, WITH A LIGHT TOUCH, YOU HEAR WANT IS BEING DESCRIBED AS A "WARBLE" SOUND. IT HAS A METALLIC RING AND LASTS A FEW SECONDS. LOADING THE ENGINE ON A HILL MAKES THE SOUND MORE INTENSE. IT IS HAPPENING TO A STOCK 2015 STINGRAY COUPE. THOUGHT THIS WAS ONLY HAPPENING TO ME BECAUSE OTHERS DO NO HAVE THIS ISSUE BUT FOUND A GROUP OF CORVETTE OWNERS ON THE CORVETTE FORUM WITH THE SAME ISSUE.

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