2008 CHEVROLET CORVETTE Engine Problems

Low beams don't work when the engine gets hot, I was driving the other night at 10pm and the headlights went out. Pitch black and almost wrecked.......This is a know issue..... Fuel pump has small cracks in the top of driver side fuel pump could start fire, and its a know issue....... Heads on the LS7 also know valve issue. It will ruin the motor.....

THAT NIGHT I WAS DRIVING ON THE HIGHWAY AT 70 MPH WHEN THE ENGINE BLEW UP BECAUSE THE VALVE DROPPED THOUGH THE 8TH CYLINDER AND THE CAR SHOOK ALL THE EQUIPMENT STOPPED WORKING AND THE BRAKE NOT WORKING WELL ,I WAS SO SCARED THAT THE ROAD WAS VERY BUSY , THANKFULLY I DROVE THE CAR TO A SAFE PLACE,THE CAR MAKE 2008 ONLY 34 K MILE ,MY CAR HAD BEEN REPAIR AT CHEVROLET DEALERSHIP COST OVER 16 THOUSAND DOLLARS. *TR

Mileage: 34,000

ALL EXHAUST VALVES OUT OF SPECIFICATION AT 9,500 MILES; 6 OF 8 INTAKE VALVE GUIDES OUT OF SPECIFICATION; SPENT $1,200 FOR CYLINDER HEAD REMOVAL AND REINSTALL; VALVE JOB, NEW VALVE GUIDES AND ASSEMBLY. *TR

2008 CORVETTE WITH 119000 HAS A STRONG ODOR OF GAS AFTER FILLING UP OVER A HALF OF TANK, BUT IS SHOWING NO LEAKS. THE GAS CAP IS FIRMLY IN PLACE AND WORKS CORRECTLY. I READ THAT I SHOULD FILL THIS OUT BECAUSE IT IS A COMMON ISSUE WITH THIS MODEL CORVETTE AND COULD BE A SAFETY ISSUE. I THOUGHT I HAD BOUGHT CHEAP GAS BUT THIS HAS HAPPENED AGAIN IN THE LAST COUPLE OF DAYS. I DID SEE A RECALL LETTER FROM CHEVY BUT THE CAR IS OVER 10 YEARS OLD BUT IS UNDER 120,000 MILES. I HAVE HAD IT SINCE JUNE OF 2018. THE VEHICLE IS PARKED IN A GARAGE AND THE ODOR IS VERY STRONG. WHEN THE VEHICLE'S GAS SUPPLY DROPS BELOW A HALF A TANK, THE ODOR GOES AWAY. I FIRST NOTICED THIS IN THE FALL OF 2019, BUT HAVE NOT DRIVEN THE CAR VERY MUCH UNTIL THIS PAST WEEK. I HAVE HAD A POT HOLE ISSUE IN DEC WHERE A CLAIM WAS FILED BUT THIS HAS NOTHING TO DO WITH THAT. I WAS WONDERING IF MY VEHICLE WOULD STILL BE COVERED AT NO CHARGE TO ME BY THE DEALER OR ANOTHER CHEVY DEALERSHIP CLOSER TO MY HOME? I READ WHERE THIS IS A VERY DANGEROUS ISSUE. I DID GUESS AT THE SEPT DATE I FIRST NOTICED IT BUT IT WAS ON WEDNESDAY MARCH 25 THAT I FILLED UP AND SMELLED IT AGAIN. THANK YOU FOR YOUR ASSISTANCE.

Mileage: 118,900

WEAR ISSUE IS WITH THE VALVE GUIDES IN THE CYLINDER HEADS. IF THE ISSUE WAS NOT ADDRESSED, THE HOLLOW, SODIUM FILLED EXHAUST VALVE COULD BREAK AND DESTROY THE ENGINE. THE REPAIRS WERE MADE BEFORE THE CAR HAD AN ENGINE FAILURE WHILE DRIVING. MILEAGE ON THE CAR WAS AROUND 32,000.

Mileage: 32,000

THE VEHICLE DROPPED A CYLINDER HEAD VALVE AND WAS FIXED UNDER ORIGINAL FACTORY WARRANTY IN 2012. IT WAS FIXED BY THE DEALER USING FACTORY PARTS. IT WAS ON THE FREEWAY AND THE MOTOR LOST ALMOST ALL POWER. I HAD TO GET TOWED. IT HAPPENED AGAIN IN 2016 AFTER 20,000 MILES AND RELIGIOUS OIL CHANGES. THIS CAR WAS MAINTAINED METICULOUSLY. THEY CYLINDERS WERE FOUND TO BE AT FAULT OF DESTROYING AN EXHAUST VALVE BOTH TIMES. ADDITIONALLY, THE NUMBER 8 CYLINDER WAS FOUND TO BE CONSUMING OIL, WHICH DESTROYED MY CATALYTIC CONVERTER. THIS IS ALL WITH A VEHICLE WHICH HAD UNDER 40,000 MILES (WITHIN POWERTRAIN MILEAGE WARRANTY, BUT EXPIRED DURATION WARRANTY)

Mileage: 24,000

TL* THE CONTACT OWNS A 2008 CHEVROLET CORVETTE. THE CONTACT STATED THAT WHILE DRIVING AT 50 MPH SMOKE EMITTED FROM THE EXHAUST OF THE VEHICLE. THE VEHICLE LOST POWER AND STALLED. THE VEHICLE WAS TOWED TO WATSON CHEVROLET LOCATED AT 625 WEST AUTO MALL DRIVE, TUCSON AZ, 85705, (520)329-4097 TO BE INSPECTED. THE CONTACT WAS INFORMED THAT THE VEHICLE EXPERIENCED ENGINE FAILURE WITH A CONNECTING ROD GOING THROUGH THE SIDE OF THE ENGINE BLOCK. THE CONTACT WAS INFORMED THAT THE ENGINE NEEDED TO BE REPLACED OR REPAIRED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 56,000.

Mileage: 56,000

TL* THE CONTACT OWNS A 2008 CHEVROLET CORVETTE. THE CONTACT STATED WHILE DRIVING 30 MPH, WHEN "DISABLE RIDE SERVICE CONTROL" MESSAGE WAS DISPLAYED AS THE STEERING WHEEL SEIZED. THE CONTACT STATED SHE LOST CONTROL OF THE VEHICLE, SPUN AROUND AND COLLIDING WITH A PARKED VEHICLE. THE CONTACT STATED THAT THE VEHICLE LEFT THE GROUND AS THERE WAS NO VISIBLE SKID MARKS ON THE ROADWAY. THE AIR BAGS DID DEPLOYED. THE CONTACT MENTION THAT PREVIOUSLY THE 'SERVICE RIDE CONTROL' MESSAGE DISPLAYED AS WELL AS 'IGNITION SWITCH' AS VEHICLE LAST ALL POWER. THE CONTACT SUSTAINED LOWER BACK, WHOLE LEFT SIDE AND RIGHT KNEE WAS INJURED WHICH REQUIRED MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. THE CONTACT STATED THAT THE VEHICLE WAS A TOTAL LOSS. THE VEHICLE HAS NOT BEEN INSPECTED BY A DEALER OR AN INDEPENDENT MECHANIC AS OF YET. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS 59,902.

Mileage: 59,902

WHILE DRIVING ON HIGHWAY IN 5TH GEAR #5 EXHAUST VALVE DROPPED INTO THE CYLINDER GOING THROUGH THE PISTON AND CAUSING CONNECTING ROD TO GO THROUGH SIDE OF THE BLOCK. ENGINE SEIZED AND CAUSED THE CAR TO GO INTO A 65 MPH SPIN. LUCKILY THIS OCCURRED LATE AT NIGHT ON A OPEN 4 LANE HIGHWAY WITH LITTLE TRAFFIC. I NEARLY CLIPPED AN ONCOMING PICKUP TRUCK BUT SQUEAKED BY HIM. THE CAR HAD 32,000 MILES ON IT BUT OUT OF WARRANTY BECAUSE OF THE YEARS. TOTAL COST FOR THIS LS7 REPLACEMENT COST ME 18,000 OUT OF POCKET. I HARDLY EVEN DRIVE THE CAR BECAUSE I'M AFRAID OF IT HAPPENING AGAIN. I'M RELUCTANT TO SELL IT BECAUSE OF THE VALVE ISSUE HAPPENING TO POTENTIAL BUYER AND THEM COMING AFTER ME FOR THE FAILURE. GM NEEDS TO CORRECT THIS PROBLEM BEFORE SOMEONE GETS KILLED LIKE I COULD HAVE BEEN THAT NIGHT.

Mileage: 32,000

I JUST HAD MY MANDATED 08 C6 EMISSIONS RECALL DONE. NOW WHILE IN DRIVE AT A STOP LIGHT, THE STEERING WHEEL VIBRATES, ALONG WITH PARTS OF THE DRIVERS DOOR AND THE CENTER CONSOLE. IT IS THE NEW RESONANCE FROM THE MID CATS AND RPM IDLE CHANGE. PLUS I DROVE IT 60 MILES, THEN TOOK TEMP READINGS WITH A LASER TEMP GUN...MY RIGHT PANT LEG WAS AT 95 DEGREES, AND THE SEAT BELT PLASTIC ATTACHMENT WAS AT 115 DEGREES. I THEN MEASURED THE TEMP INSIDE THE CENTER CONSOLE...140 DEGREES. ALSO ON AVERAGE, THE ENGINE IS RUNNING 10 TO 15 DEGREES HOTTER(DUE TO MORE BACK PRESSURE AND THE LEANING OF THE AIR FUEL MIXTURE) WHEN I PARKED IT IN THE GARAGE AND GOT OUT...YOU COULD FEEL A STRONG WAVE OF HEAT COMING FROM UNDER THE CAR. THE DEALERSHIP THAT I TOOK IT TO AGREES WITH MY CONCLUSIONS. HOWEVER, GM CORPORATE IS NOT HELPING ME TO RESOLVE THESE ISSUES.

Mileage: 34,000

ENGINE BEGAN TO RATTLE AND I STOPPED TO CHECK BUT SAW NO VISUAL PROBLEMS. NEXT DAY HAD IT SHIPPED TO MECHANIC TO CHECK AND FOUND THAT VALVES, GUIDES AND STEMS WERE OUT OF SPEC. STATED THAT THIS WAS A PROBLEM WITH HEADS FROM LS7 ENGINES. PIECE OF JUNK HE CALLED THEM BUT I CHOSE TO DISAGREE THATS WHY IM WRITING THIS COMPLAINT BECAUSE I BELIEVE IN GM. 50 YEARS LOYAL GM OWNER AND MY DAD WAS AND STILL DRIVES GMS (70 YEARS).

Mileage: 82,000

ENGINE KNOCK ON 6.2 LITER ENGINE. WHEN THE VEHICLE SITS A KNOCKING OCCURS IN THE ENGINE UPON STARTUP. IT IS NOT A LIFTER KNOCK, BUT A KNOCK DEEPER IN THE ENGINE GM HAS NOTED THE PROBLEM AND MADE MULTIPLE REPAIRS (6+) CAM SHAFT CHANGED BUT NO LIFTERS. THOUGHT THIS WAS ODD AS THE WEARING SURFACES ARE NOW DISSIMILAR .GM SAID THIS IS ALL THEY AUTHORIZED. KNOCK STILL PRESENT GM THEN REMOVED UPPER END OF ENGINE. NOTED EXTREME CARBON BUILD UP ON MULTIPLE PISTONS. ONE PISTON HAD SO MUCH BUILDING APPARENTLY CLOSE TO VALVES HITTING. GM TECH ADVISED ENGINE REPLACEMENT, GM AUTHORIZED CLEANING OF PISTONS: GUESS WHAT, KNOCK STILL PRESENT THE KNOCKING IS A PISTON OR LOWER END KNOCK. SIMILAR TO WRIST PINS OR ROD BEARING CAPS OR BEARINGS. WHEN KNOCKING OCCURS ENGINE IS ROUGH AND PULSATES. TIME RANGES FROM 30 SECONDS TO COUPLE OF MINUTES AFTER MULTIPLE GM REPAIRS KNOCK IS STILL PRESENT, NOTICED ENGINE PERFORMANCE IS NOT THE SAME AND WITH LACK OF STABILITY FUEL ECONOMY HAS DROPPED

Mileage: 7,794

THE CAR HAD AN OIL PUMP FAILURE IN JULY (ZERO OIL PRESSURE IN THE ENGINE), AFTER WHICH IT WAS TOWED TO AN INDEPENDENT SHOP WHO IS CURRENTLY REPLACING THE OIL PUMP AND VERIFYING THAT NO DAMAGE WAS DONE TO THE ENGINE FOR A COST OF ABOUT $2000. UPON INVESTIGATION ON MY PART, GM HAS KNOWN THAT OIL PUMPS CAN FAIL ON NOT ONLY MY CAR BUT ANY CAR WITH A "GENERATION 4" V8 INCLUDING A 6TH GENERATION CORVETTES. THEY HAVE RELEASED TO THEIR DEALERS DOCUMENT PIP4158G STATING THIS. I THINK PERSONALLY THAT THIS IS A SAFETY ISSUE AND THERE SHOULD BE A RECALL, BUT AT THE VERY LEAST GM SHOULD HAVE TO PAY FOR ANY SERVICE WORK DONE BECAUSE OF THIS "KNOWN" ISSUE. I REFUSE TO TAKE MY CAR TO A GM DEALER, DUE TO THE PAST TREATMENT OF MY CAR BY DEALERS (THEY ARE CARELESS) AND SO GM WILL DO NOTHING AS THEY SAY "IT CAN'T BE DIAGNOSED BY ANYONE BUT A GM DEALER." THAT'S HOGWASH

Mileage: 36,000

DRIVING NORMAL CITYSTREETS 25MPH WHEN ENGINE NOISE STARTED,WENT ANOTHER 2 BLOCKS,ENGINE STOPPED RUNNING,TOWED TO CHEVY DEALER. IF THIS HAD HAPPENED ON MAJOR HIGHWAY,POSSIBLE CATASTROPHIC EFFECTS.NO POWER STEERING ,BRAKES,ENGINE OIL ON ROADWAY,STEERING WHEEL LOCK,WRECKS ,INJURIES OR POSSIBLE FATALITIES. ENGINE HEAD POOR WORKMANSHIP IN THESE LS7 ENGINES. *TR

Mileage: 14,200

THIS IS THE SECOND TIME THE ENGINE HAS STALLED WHILE SHE WAS DRIVING. THE FIRST TIME THE VEHICLE WAS ONLY GOING ABOUT 5 MPH. THE SECOND TIME IT WAS GONG 35 MPH. THE CAR WILL RESTART. NO MALFUNCTION WERE DETECTED BY AN OBD 2 TESTER. NO COMPUTER MALF. INDICATIONS NO CK ENG LIGHTS. THE CAR NOW IS COMPLETELY DEAD IN THE GARAGE. REQUIRES TOWING. BATTERY IS ONLY 2 TO 3 MONTHS OLD. *TR

Mileage: 20,000

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, LOOSING A VALVE WHILE DRIVING WILL RESULT IN LOSS OF POWER ASSIST FOR STEERING AND BREAKING WHILE ON THE ROAD . I TOOK MY CAR WITH 13500 MILES ON IT TO A CORVETTE SPECIALTY SHOP TO HAVE MY VALVE GUIDE CLEARANCE TESTED. I HAD (8) EXHAUST VALVE GUIDE AND (3) INTAKE VALVE GUIDES OUTSIDE OF SERVICE SPECIFICATIONS, AND A COMBINATION OF (5) OTHER INTAKE 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. I CAN PROVIDE DATA ON THE FAILED GUIDES FOR DOCUMENTATION 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. *TR

Mileage: 13,500

ENGINE STARTED MAKING NOISE, FEELING THERE COULD BE A FAILURE I DROVE TO MY SERVICING CHEVROLET DEALER. THEY LISTENED TO THE ENGINE AND SAID, THAT'S NORMAL. NOT TRUSTING THAT JUDGMENT, I HAD AN INDEPENDENT SHOP INSPECT THE ENGINE, AND HAD THE VALVE ISSUE RESOLVED AT MY EXPENSE. I WAS STILL UNDER EXTENDED WARRANTY, WHICH MADE ME ANGRY. BUT IF THE DEALER SAYS THERE IS NOTING WRONG, WHAT AM I SUPPOSED TO DO? AFTER THE REPAIR WAS PERFORMED AT MY EXPENSE, I TOOK THE FAILING PARTS BACK TO THE DEALER FOR THEM TO INSPECT. THEY ADMITTED THEY WERE WRONG, BUT WHAT GOOD DID THAT DO ME? KEEP IN MIND MY VEHICLE HAD LESS THAN 10K MILES ON IT. THIS IS WHERE I FEEL SAFETY COMES INTO PLAY; HAD MY ENGINE FAILED AND LOCKED UP ON TODAYS CROWED INTERSTATES, I COULD HAVE CAUSED A MAJOR ACCIDENT. THE FAILURES I HAVE READ ABOUT, GAVE NO WARNING, WHEN THE ENGINE LET-GO. *TR

Mileage: 9,800

CORVETTE 2008 HAS APPROXIMATELY 15,000 MILES. THE IGNITION COIL ON CYLINDER 6 FAILED. AFTER REPAIRS AND APPROXIMATELY 500 MILES THEREAFTER, IGNITION COIL ON CYLINDER 8 FAILED.

Mileage: 15,000

I WAS DRIVING ON THE FREEWAY AT NIGHT ON MY WAY HOME AROUND 11PM WHEN MY LOW BEAM LIGHTS WENT DARK AND WOULD NOT TURN BACK ON.I'VE CHECKED ALL THE FORUMS ABOUT THIS PROBLEM AND IT IS HAPPENING A LOT, BUT APPARENTLY GM WONT INCLUDE THE 2008 VEHICLES EVEN THOUGH ONES LIKE MINE HAVE THE SAME EQUIPMENT AS EARLIER MODELS WITH THE SAME PROBLEMS. A FEW DAYS PRIOR, MY GIRLFRIEND WAS DRIVING THE CAR, AND COMPLAINED ABOUT THE SAME PROBLEM, BUT I JUST THOUGHT IT WAS BECAUSE SHE DIDN'T KNOW HOW TO OPERATE THE CAR. ONCE I GET IT FIXED, HOW DO I KNOW THE LIGHTS WONT MYSTERIOUSLY GO OFF AGAIN?! I'M VERY DISAPPOINTED IN ALL THE ELECTRICAL PROBLEMS WITH THIS VEHICLE, AND THIS IS THE LAST STRAW. (AFTER ONLY 38K MILES THE FUEL TANK GAUGE STOPPED WORKING. AT 60K MILES THE CAR WAS HAVING ISSUES WITH OVERHEATING BECAUSE THE FANS WOULDN'T TURN ON. AT 75K MILES A CLUNKING NOISE STARTED COMING FROM THE DIFFERENTIAL. IT'S A STOCK CAR MIND YOU. AND NOW AT 85K MILES 2008, THE HEADLIGHTS WONT TURN ON. GM SIMPLY WON'T STAND BEHIND THE CAR, AND SO I'VE BEEN LEFT TO FIGURE IT OUT ON MY OWN. SO MUCH FOR BUYING MY DREAM CAR. IT SEEMS MORE LIKE A NIGHTMARE.) *TR

Mileage: 85,000

I'VE HAD REPEATED FAILURES THAT HAVE REQUIRED MULTIPLE REPAIRS 1. ENGINE KNOCKING- REPEATED REPAIRS, UPPER END REPLACED KNOCKING AND ENGINE ROUGHNESS STILL THERE 2. TRANSMISSION- FAILURE OF CLUTCH PLATES, REPLACED PROBLEM NOT RESOLVED, TRANSMISSION SLIPPING IS INCREASING 3. ELECTRICAL SYSTEM FAILURE: THE ELECTRICAL SYSTEM COMPLETELY SHUTS DOWN, NOTHING OPERATES EVEN THE HAZARD WARNING LIGHTS- THIS HAS OCCURRED A MINIMUM OF 8 TIMES. RELAYS, SWITCHES WIRING BATTERY GET EXTREMELY HOT UNTIL BATTERY BLEEDS DOWN. HIGH POTENTIAL FOR ELECTRICAL FIRES AND CAR CESSATION OF OPERATIONS HAVE LEFT US IN PERILOUS CONDITIONS ON MULTIPLE OCCASIONS. *TR

Mileage: 8,000