2007 CHEVROLET CORVETTE Z06 Complaints

#1 AZDANZ06'S AVATARAZDANZ06 , 01-06-2015 11:27 AM LINK TO FILE COMPLAINT: HTTPS://WWW-ODI.NHTSA.DOT.GOV/VEHICL...NT/INDEX.XHTML I JUST FILED A COMPLAINT WITH THE NHTSA ABOUT THE OUT OF SPEC VALVE GUIDE ISSUE, I WOULD ENCOURAGE EVERYONE ELSE TO DO SO AS WELL, MAYBE JUST MAYBE IT WILL FORCE GM TO FINALLY DO A RECALL AND QC ON PARTS. HERE IS MY COMPLAINT: I WAS CONCERNED ABOUT EXCESSIVE VALVE TRAIN NOISE AND AFTER READING SEVERAL CORVETTE FORUM THREADS ABOUT IMPROPERLY MACHINED HEADS BY GM'S SUPPLIER LINAMAR, AND THAT NUMEROUS VEHICLES HAVE HAD VALVES DROP AND RUIN THE ENGINES, 88% OF THE CORVETTE FORUM MEMBERS WHO HAVE HAD THEIR CYLINDER HEADS TESTED FOR EXCESSIVE VALVE GUIDE WEAR, WERE OUT OF SERVICE SPECIFICATIONS. SOURCE: HTTPS://WWW.CORVETTEFORUM.COM/FORUMS...-REGISTRY.HTML GM NEEDS TO ISSUE A RECALL ON THIS ISSUE, THERE HAVE BEEN NUMEROUS ENGINE FAILURES AS A RESULT OF A DROPPED VALVE INTO A CYLINDER WHICH CAN CAUSE ACCIDENTS AND FIRES. GM IS VERY AWARE OF THIS ISSUE, BUT REFUSES TO DO ANYTHING ABOUT THIS HUGE SAFETY RISK TO DRIVERS, PASSENGERS, AND NEARBY VEHICLES IF THE ENGINE FAILS GOING DOWN THE ROAD. #2 WHIS9'S AVATARWHIS9 , 01-06-2015 11:39 AM

THERE IS A LEAK AT THE TOP OF MY FUEL TANK. WHENEVER THE TANK IS 3/4 FILL OR GREATER, FUEL SLOSHES OUT OF THE TOP OF THE TANK AND POOLS ON TOP OF THE TANK AND SOMETIMES DRIPS DOWN ONTO THE EXHAUST.. PARKING THE CAR OVERNIGHT IN THE GARAGE IS FILLING MY GARAGE WITH FUEL VAPORS AND I AM CONCERNED THE DRIPPING FUEL MAY BE A FIRE RISK.

VALVE BROKE AND LOCKED UP ENGINE. CAR SKIDDED OFF HIGHWAY AND WAS DESTROYED. I WAS DRIVING ON INTERSTATE AND IT WAS RAINING. NO INDICATION OF PROBLEM BEFORE EVENT

I WAS CONCERNED ABOUT EXCESSIVE VALVE TRAIN NOISE AND AFTER READING SEVERAL CORVETTE FORUM THREADS ABOUT IMPROPERLY MACHINED HEADS BY GM'S SUPPLIER LINAMAR, AND THAT NUMEROUS VEHICLES HAVE HAD VALVES DROP AND RUIN THE ENGINES, I TOOK MY CAR WITH 27000 MILES ON IT TO A CORVETTE SPECIALTY SHOP TO HAVE MY VALVE GUIDE CLEARANCE TESTED. I HAD (2) INTAKE VALVE GUIDES OUTSIDE OF SERVICE SPECIFICATIONS, (4) EXHAUST VALVE GUIDES OUTSIDE OF SERVICE SPECIFICATIONS, AND A COMBINATION OF (10) OTHER INTAKE AND EXHAUST VALVE GUIDES AT OR NEAR THE MAXIMUM OUTSIDE OF SERVICE SPECIFICATIONS. THE CAR IS BEING REPAIRED WITH PROPER RE-MACHINING OF THE HEADS TO MAKE THE VALVE GUIDES CONCENTRIC, NEW INTAKE AND EXHAUST VALVE GUIDES INSTALLED, AS WELL AS NEW SEALS, VALVES, SPRINGS, ETC. 88% OF THE CORVETTE FORUM MEMBERS WHO HAVE HAD THEIR CYLINDER HEADS TESTED FOR EXCESSIVE VALVE GUIDE WEAR, WERE OUT OF SERVICE SPECIFICATIONS. SOURCE: HTTP://WWW.CORVETTEFORUM.COM/FORUMS/...-REGISTRY.HTML GM NEEDS TO ISSUE A RECALL ON THIS ISSUE, THERE HAVE BEEN NUMEROUS ENGINE FAILURES AS A RESULT OF A DROPPED VALVE INTO A CYLINDER WHICH CAN CAUSE ACCIDENTS AND FIRES. GM IS VERY AWARE OF THIS ISSUE, BUT REFUSES TO DO ANYTHING ABOUT THIS HUGE SAFETY RISK TO DRIVERS, PASSENGERS, AND NEARBY VEHICLES IF THE ENGINE FAILS GOING DOWN THE ROAD.

I'VE READ SEVERAL DIFFERENT POSTS ABOUT PEOPLE WITH 2007 CORVETTES HAVING PROBLEMS WITH VALVES AND DROPPING VALVES AND LOSING CONTROL WHEN THIS BECAUSE OF THE POWER STEERING AND BRAKES NOT WORKING WHEN THIS HAPPENS. I BOUGHT MY 2007 CORVETTE Z06 NEW BACK IN 2007 AND I'VE ALWAYS NOTICED VALVE NOISE AND LATELY IT SEEMS A LITTLE LOUDER. I HEAR THE VALVE NOISE MOSTLY DRIVING IT IN TOWN. I'M NOT SURE IF I SHOULD JUST WAIT FOR THE VALVES TO FAIL AND TAKE MY CHANCES OR PAY TO HAVE SOMEONE TO PULL THE HEADS AND CHECK ALL THE VALVES AND REPAIR ANY ONES THAT ARE OUT OF SPECIFICATION. SO I THINK IT'S GM'S RESPONSIBILITY TO DO A RECALL FOR THIS BECAUSE IN MY OPINION THIS IS A DEFECT AND IT WOULD BE VERY DANGEROUS TO DROP A VALVE AND LOSE CONTROL OF MY CAR. I SPENT A LOT OF MONEY ON THIS CAR AND I JUST DON'T FEEL I SHOULD NEED TO PAY ANYMORE MONEY TO DIAGNOSE AND FIX THIS PROBLEM. MY HEADLIGHTS STOPPED WORKING TONIGHT AND LUCKILY THERE IS A RECALL FOR THAT PROBLEM.

AS I WAS DRIVING ON THE HIGHWAY MY CAR STARTED TO SWERVE LEFT THEN RIGHT, RESULTING A TOTAL WIPEOUT. I WAS DRIVING AT SAFE SPEED AND WITH CONTROL. THE "SERVICE ACTIVE HANDLING' WARNING CAME UP AFTER I TOOK CONTROL OF THE CAR ON THE SIDE OF THE HIGHTWAY.

I AM EXTREMELY CONCERNED ABOUT EXCESSIVE VALVE TRAIN NOISE AND AFTER READING SEVERAL CORVETTE FORUM THREADS ABOUT IMPROPERLY MACHINED HEADS BY GM'S SUPPLIER LINAMAR, AND THAT NUMEROUS VEHICLES HAVE HAD VALVES DROP AND RUIN THE ENGINES CAUSING A LOSS OF CONTROL OF THE VEHICLE DUE TO THE ENGINE STOPPING ABRUPTLY. 88% OF THE CORVETTE FORUM MEMBERS WHO HAVE HAD THEIR CYLINDER HEADS TESTED FOR EXCESSIVE VALVE GUIDE WEAR, WERE OUT OF SERVICE SPECIFICATIONS. SOURCE: HTTP://WWW.CORVETTEFORUM.COM/FORUMS/C6-Z06-DISCUSSION/3386141-THE-OUT-OF-SPEC-GUIDE-WEAR-REGISTRY.HTML GM NEEDS TO ISSUE A RECALL ON THIS ISSUE, THERE HAVE BEEN NUMEROUS ENGINE FAILURES AS A RESULT OF A DROPPED VALVE INTO A CYLINDER WHICH CAN CAUSE SEVERE ACCIDENTS AND FIRES. GM IS VERY AWARE OF THIS ISSUE, BUT REFUSES TO DO ANYTHING ABOUT THIS HUGE SAFETY RISK TO DRIVERS, PASSENGERS, AND NEARBY VEHICLES IF THE ENGINE FAILS GOING DOWN THE ROAD. IT HAS BEEN NOTED ON THE FORUM THAT GM IS VERY AWARE OF THE ISSUES AND I ASSUME THEY THINK NO ONE WILL REPORT THEM FOR NOT HANDLING IT CORRECTLY. THE ISSUE IS THIS IS A CRITICAL SAFETY ISSUE FOR ANYONE DRIVING A 06-13 Z06 MODEL ON THE ROAD. I AM TO THE POINT I DON'T FEEL SAFE TO DRIVE MY VEHICLE ANYMORE DUE TO THE LOUD 'TICKING' VALVE-TRAIN AS IT IS (SYMPTOM) MEANING IT IS LIKELY TO FAIL AT ANY MOMENT SEIZING THE ENGINE WHILE ON THE ROAD. I HAVE WAITED ON GM FOR 6 YEARS TO DO THE CORRECT THING ON THEIR OWN BUT I AM NOW REPORTING IT DUE TO THEIR GROSS NEGLIGENCE AND DISREGARD OF THEIR CUSTOMERS SAFETY.

WHILE DRIVING ON THE ROAD AT APROX. 45MPH, MY CAR EXHAUST VALVE DROPPED IN THE MOTOR CAUSING IMMEDIATE ENGINE FAILURE ALSO CREATING POWER STEERING AND POWER BRAKES TO STOP WORKING IMMEDIATELY. THIS SAME EXHAUST VALVE ISSUES OCCURRED WITH MANY OTHER GM CORVETTES WITH THE 7.0LITER Z06 MOTOR.

VALVE TRAIN ROCKER ARMS BROKEN LEAVING NEEDLE BEARINGS IN THE OIL, AND ALL VALVE GUIDES WERE OUT OF TOLERANCE. *TR

WHEN I HAD THE MOTOR CHECKED PROACTIVELY THE EXHAUST VALVE GUIDES WERE OUTSIDE OF GM SPECIFICATIONS. THIS DEFECT CAN CAUSE THE HEAD OF A VALVE TO SNAP OFF AND DESTROY THE ENGINE. THE ENGINE WILL STOP WORKING IMMEDIATELY, CAUSING THE POWER STEERING AND POWER BRAKES SYSTEMS TO FAIL. THE VALVE FAILURE CAN CAUSE AN OIL SPILL ONTO THE ROAD IF THE ENGINE IS COMPROMISED. THERE HAVE BEEN NUMEROUS DOCUMENTED CASES OF ENGINE FAILURE AS A RESULT OF A DROPPED VALVE INTO A CYLINDER. THIS CAN CAUSE A CATASTROPHIC ACCIDENT OR FIRE. GM IS VERY AWARE OF THIS ISSUE, BUT REFUSES TO DO ANYTHING ABOUT THIS HUGE SAFETY RISK TO DRIVERS, PASSENGERS, AND NEARBY VEHICLES IF THE ENGINE FAILS GOING DOWN THE ROAD. I WAS FORCED TO SPEND IN EXCESS OF $3K TO INSURE I DID NOT HARM ANYONE OR MYSELF. BEST REGARDS *TR