Owners have filed 51 complaints
about the 2007 Chevrolet Corvette Z06 with NHTSA between 2008 and 2019.
The largest single group is the engine & cooling.
Across this model's run it ranks 3 of 3 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 45
Against the median year of the Chevrolet Corvette Z06. 50 means typical for this
model; 100 means roughly double.
Severity — 10
2% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
62% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2007 compares with every other Chevrolet Corvette Z06
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
12.1%
1,000 – 9,999 miles
510.6%
10,000 – 24,999 miles
1634.0%
25,000 – 49,999 miles
1634.0%
50,000 – 74,999 miles
510.6%
75,000 – 99,999 miles
36.4%
100,000 – 149,999 miles
12.1%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Sep 2008peak 7Dec 2019
NHTSA investigations into the 2007 Chevrolet Corvette Z06
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
EA13007Opened 23 Aug 2013Closed 24 Jun 2014EXTERIOR LIGHTING
Simultaneous Loss of Low-Beam Headlights
On May 14, 2014, General Motors (GM) submitted a Part 573 defect information report initiating NHTSA Safety Recall 14V-251 to remedy the subject vehicles.GM will remedy a defect condition in the underhood bussed electrical center (UBEC) by modifying the vehicle's electrical harnessing.GM also announced a customer satisfaction bulletin to address this issue on model year (MY) 2008-2013 Chevrolet Corvettes.Both programs will be conducted free of charge.According to GM, when the engine heats up and cools down (from normal use), the plastic material in the UBEC housing expands at a different rate...
PE13013Opened 6 May 2013Closed 26 Aug 2013EXTERIOR LIGHTING
Loss of Low Beam Headlights
The Office of Defects Investigation (ODI) opened this investigation based on 30 reports from consumers alleging that, after driving for a short time (5 to 30 minutes), both low beam headlights stopped working simultaneously and without warning. The low beam headlights remained inoperative for the remainder of the drive cycle, however no other lighting is affected.General Motors (GM) provided information in response to ODI's information request letter explaining that the loss of headlights is caused by a fractured low beam circuit wire in the underhood bussed electrical center (UBEC), a device...
Recalls on the 2007 Chevrolet Corvette Z06
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 2009362972 units in Canada
Other
On certain vehicles equipped with a removable roof, the adhesive between the roof and the frame may separate. If there is a complete separation, the roof panel may detach from the vehicle and should this happen while driving, it could result in a crash causing property damage, personal injury or death. Correction: Dealers will install a new design roof panel.
Reports where the owner recorded a crash, a fire, an injury or a death.
at 9,655 milesHuntsville, ALCrash
ENGINE
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
NHTSA complaint #10983504 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
at 28,000 milesOakland, CA
FUEL/PROPULSION SYSTEM
VEHICLE HAS A REALLY INTENSE SMELL OF GASOLINE INSIDE CABIN WHEN CARS PARKED OR IN DRIVE.
NHTSA complaint #11289577 — an unverified report by a vehicle owner.
at 64,000 milesGrand Prairie, TX
ENGINE
THE HEAD ISSUE VALVE GUIDE ON THE HEADS WAS COMPLETELY OUT OF SPEC....HAVE REPAIRED CAR TWICE BECAUSE OF THIS ISSUE '.
NHTSA complaint #11110132 — an unverified report by a vehicle owner.
Lake City, FL
ELECTRICAL SYSTEM
THE LAST 2 DAYS WHEN I DRIVE AT NIGHT THE HEADLIGHTS (LOW BEAMS) SHUT OFF. I SWITCH TO THE HIGH BEAMS AND THEY WORK. THIS HAS HAPPENED IN THE DARK AND IS DANGEROUS BECAUSE IT HAPPENS ABOUT 30 OR 40 MINUTES AFTER DRIVING THE CAR. I LET THE CAR SIT FOR 4 OR 5 HOURS AND THEN COME BACK AND THEY START WORKING. IT IS THE UNDERHOOD BUSSED ELECTRICAL CENTER (UBEC) HOUSING I SUSPECT.
NHTSA complaint #11083914 — an unverified report by a vehicle owner.
at 88,000 milesSanta FE, TX
ENGINE
DANGEROUS CONDITIONS. EXHAUST VALVE DESIGN CAUSES EAR THAT EVENTUALLY BREAKS EXHAUST VALVE AND DESTROYS ENGINE. EXHAUST VALVE LOOSE ENOUGH TO BREAK AND CAUSE ENGINE DAMAGE, POSSIBLE FIRE AND/OR FLAMMABLE FLUID LEAKAGE. HTTPS://WWW.YOUTUBE.COM/WATCH?V=WTOA3VLGOES
NHTSA complaint #11081094 — an unverified report by a vehicle owner.
at 48,800 milesCorona, CA
POWER TRAIN
VEHICLE IS ALWAYS STATIONARY WHEN IT GETS STUCK IN PARK, AND UNABLE TO SHIFT INTO GEAR. I LET IT SET FOR A FEW MINUTES THEN PUSH START AGAIN. SOMETIMES IT WILL SHIFT INTO GEAR AND OTHER TIMES IT WILL NOT. 50/50 CHANCE ONE WAY OR THE OTHER. THIS HAS HAPPENED SEVERAL TIMES SINCE I INHERITED THIS VEHICLE FROM MY FATHER IN EARLY 2017 WITH 48,000 MILES ON IT. FAST FORWARD TO TODAY 03/09/2018 VEHICLE DOES NOT GO INTO PARK BUT IS "STUCK" IN NEUTRAL, DOES NOT GO INTO PARK OR ANY OTHER GEAR.
NHTSA complaint #11078260 — an unverified report by a vehicle owner.
Jupiter, FL
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
2007 CEHVROLET CORVETTE. CONSUMER WRITES IN REGARDS TO A GAS TANK LEAK. *LD THE CONSUMER REQUESTED THE MANUFACTURER'S TO COVER THE REPAIR COST.
NHTSA complaint #11066231 — an unverified report by a vehicle owner.
at 10,350 milesRoanoke, IN
ENGINE
MY 10,000 MILE 2007 HEADS ARE AT AHP FOR REBUILDING. THEY REPORTED BACK THAT 1 EXHAUST AND 3 INTAKE GUIDES WERE WORN PAST THE SERVICE LIMIT. SEVERAL OTHERS WERE CLOSE OR AT THE LIMIT.
NHTSA complaint #11066896 — an unverified report by a vehicle owner.
at 59,000 milesSAN Pablo, CA
ENGINE
'TAKATA RECALL' JUST BOUGHT A 2007 Z06 CORVETTE AND LATELY I'VE BEEN SEEING A LOT OF COMPLAINTS ABOUT THE VALVE STEMS BREAKING AND CAUSING CATASTROPHIC ENGINE FAILTURE CAUSING THE POWER STEERING AND BREAKS TO FAIL SO NOW I HAVE TO PAY 5000.00 + TO GET IT SERVICED AND EVERY 10K MILES DO THE SAME THING BECAUSE THE VALVE STEM AND GUIDES GET HOT AND START TO WIGGLE
NHTSA complaint #11048120 — an unverified report by a vehicle owner.
at 21,000 milesSpring, TX
ENGINE
AT 65MPH, DRIVING DOWN THE HIGHWAY, THE CAR MADE A HORRENDOUS LOUD CLATTERING SOUND AND THE MOTOR LOCKED UP. PULLED TO THE SIDE OF THE ROAD TO SEE OIL POURING OUT THE SIDE OF THE ENGINE BLOCK, WHERE THE VALVE WAS SPIT OUT - CAUSING A HUGE HOLE IN THE SIDE OF THE MOTOR
NHTSA complaint #11016375 — an unverified report by a vehicle owner.
at 60,000 milesLawrenceville, GA
ENGINE
MY 2007 CHEVROLET CORVETTE Z06 DROPED A VALVE WHILE I WAS DRIVING HOME. I WAS ON A REGULAR 45MPH SPEED LIMIT ROAD IN TRAFFIC WHEN I REALIZED THE CAR WAS LOSING POWER AND QUICKLY PULLED ON THE SIDE OF THE ROAD BECAUSE THERE WERE CARS IN FRONT AND BEHIND ME. LUCKILY NOBODY WAS HURT BUT IF I HAD BEEN ON A HIGHWAY IN THE MIDDLE LANE SOMEONE COULD HAVE LOST THEIR LIFE INCLUDING ME. FROM THE SECOND I REALIZED THE CAR WAS LOSING POWER TO THE POINT THE ENGINE SHUT OFF WAS A MATTER OF 5 SECONDS MAYBE. AFTER DOING MUCH RESEARCH ONLINE I FOUND OUT THERE IS A VERY COMMON PROBLEM WITH VALVE GUIDES BEING OUT OF SPEC IN THIS MODEL CORVETTE.
NHTSA complaint #10992918 — an unverified report by a vehicle owner.
at 42,000 milesCedar Park, TX
ENGINE
#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
NHTSA complaint #10992459 — an unverified report by a vehicle owner.
at 36,000 milesCharlotte, NC
FUEL/PROPULSION SYSTEM
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.
NHTSA complaint #10984173 — an unverified report by a vehicle owner.
at 9,655 milesHuntsville, ALCrash
ENGINE
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
NHTSA complaint #10983504 — an unverified report by a vehicle owner.
at 500 milesBonita, CA
ENGINE
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.
NHTSA complaint #10836566 — an unverified report by a vehicle owner.
at 24,000 milesFederal WAY, WA
ENGINE
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.
NHTSA complaint #10836568 — an unverified report by a vehicle owner.
at 35,995 milesClifton, NJ
ENGINE
THE EXHAUST VALVE BROKE OFF, AND ENGINE BLEW UP. I WAS DRIVING ON HIGHWAY.
NHTSA complaint #10818254 — an unverified report by a vehicle owner.
at 40,000 milesLong Beach, CA
ELECTRONIC STABILITY CONTROL (ESC)
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.
NHTSA complaint #10789100 — an unverified report by a vehicle owner.
at 28,100 milesPowder Springs, GA
ENGINE
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.
NHTSA complaint #10762738 — an unverified report by a vehicle owner.
at 33,000 milesWashington, DC
STEERING
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.
NHTSA complaint #10722564 — an unverified report by a vehicle owner.
at 33,000 milesWashington, DC
ENGINE
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.
NHTSA complaint #10722564 — an unverified report by a vehicle owner.
at 33,000 milesWashington, DC
SERVICE BRAKES
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.
NHTSA complaint #10722564 — an unverified report by a vehicle owner.
at 36,500 milesCalhan, CO
ENGINE
VALVE TRAIN ROCKER ARMS BROKEN LEAVING NEEDLE BEARINGS IN THE OIL, AND ALL VALVE GUIDES WERE OUT OF TOLERANCE.
NHTSA complaint #10704762 — an unverified report by a vehicle owner.
at 19,000 milesAuburn, NH
POWER TRAIN
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
NHTSA complaint #10700987 — an unverified report by a vehicle owner.
at 83,000 milesNEW Port Richey, FL
ENGINE
AFTER MONTHS OF READING ABOUT THE EXHAUST VALVE ISSUE WITH CORVETTE Z06S I TOOK MY CAR AND HAD THE HEADS CHECKED. THE SHOP FOUND THE VALVE GUIDE CLEARANCE TO BE OUTSIDE THE SPECIFIED ACCEPTABLE RANGE. THE DEFECT PUTS UNDUE STRESS ON THE SODIUM FILLED VALVES AND IF THE VALVE FAILS IT CAN CAUSE CATASTROPHIC ENGINE DAMAGE AND POTENTIALLY DEADLY SITUATION IF THIS OCCURS AT SPEED ON THE ROADWAY AS THE DRIVER WILL LOSE ABILITY TO CONTROL THE VEHICLE POTENTIALLY CAUSING A DEADLY ACCIDENT. I PAID SEVERAL THOUSAND DOLLARS OUT OF POCKET TO FIX THIS ISSUE DESPITE GM ACKNOWLEDGING THERE IS AN ISSUE WITH THESE VEHICLES.
NHTSA complaint #10690966 — an unverified report by a vehicle owner.
at 33,720 milesSeattle, WA
ENGINE
WIGGLE TEST ON ALL VALVES SHOWED ALL EXHAUST VALVES WITH EXCESSIVE GUID WHERE....SAFETY ISSUE....!!! THIS CAN AND HAS LED TO CATASTROPHIC ENGINE FAILURE AT FREEWAY SPEEDS.......
NHTSA complaint #10682600 — an unverified report by a vehicle owner.