1998 Buick Riviera

EA02-030 IS CLOSED WITH GMEA02-030 IS CLOSED WITH GM?S ACTIONS IN 03V-473 AND 04V-090 RECALLING APPROXIMATELY 529,000 MY 1998-99 C- AND H-BODY VEHICLES EQUIPPED WITH DEFECTIVE FUEL PRESSURE REGULATORS.THESE VEHICLES WERE EQUIPPED WITH PLASTIC INTAKE MANIFOLDS THAT ARE UNABLE TO CONTAIN PRESSURES THAT OCCUR IN SOME BACKFIRE EVENTS AND DEFECTIVE FUEL PRESSURE REGULATORS WITH LEAKING DIAPHRAGMS THAT CAN PROVIDE A SOURCE OF FUEL TO PRODUCE A COMBUSTIBLE AIR-FUEL MIXTURE IN THE MANIFOLD.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY ODI THAT NO SAFETY DEFECT EXISTS IN THE VEHICLES THAT ARE NOT INCLUDED IN GM?S RECALLS.ODI WILL CONTINUE TO MONITOR THE INCIDENCE OF MANIFOLD RUPTURES AND RELATED FIRES IN OTHER MY 1995-2002 GM PASSENGER CARS EQUIPPED WITH THE SUBJECT INTAKE MANIFOLD.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

ABOUT TWO MONTHS AGO, WHEN FUELING MY VEHICLE, I NOTICED A PUDDLE OF GASOLINE IN THE VICINITY OF THE LEFT REAR WHEEL, INLINE WITH THE FUEL FILLER DOOR. I HAD NOTED THE CHECK ENGINE LIGHT SUBSEQUENTLY CAME ON AND CODE 0440 (OR A VARIANT OF THAT, I CANNOT RECALL WITH 100% CERTAINTY. WHEN I HAD SOME FREE TIME, I STARTED INVESTIGATING THE EMISSIONS CODE AND DECIDED TO CHECK THE FUEL SYSTEM FROM THE REAR OF THE VEHICLE WORKING FORWARD. WHILE LOOKING AT THE FUEL FILLER NECK, I NOTED A GLINT OF FRESH STEEL BEHIND THE TIRE. UPON REMOVING THE TIRE, I NOTED A HOLE IN THE FILLER NECK THE SIZE OF A US QUARTER. SINCE IT'S A FUEL SYSTEM COMPONENT, I INVESTIGATED WHETHER I COULD GET A REPLACEMENT PART (TO NO AVAIL). MY FIELD EXPEDIENT FIX WAS TO WRAP THE FUEL FILLER INTAKE STEEL PIPE WITH A COPIOUS AMOUNT OF DUCT TAPE AS A TEMPORARY FIX UNTIL I COULD SEE IF A JUNKYARD WOULD YIELD A NEW PIPE. NO SUCH LUCK IN FIND A PART THAT DIDN'T HAVE A HOLE OF SORTS (SEE ENCLOSED PHOTO'S OF 'REPLACEMENT' OFFERINGS. MY INVESTIGATION LED ME TO CONCLUDE THE WEAR IN THE PIPE WAS CAUSED BY WHEEL HOP, PRIMARILY WHEN ROLLING OVER SPEED BUMPS AT A SPEED HIGHER THAN RECOMMENDED, CAUSING THE REAR WHEEL TO "HOP UPWARDS" AND COME IN CONTACT WITH THE PIPE. GIVEN THE AMOUNT OF SPEED BUMPS IN RESIDENTIAL NEIGHBORHOOD, THE LIKELIHOOD OF THIS HAPPENING IS CONSISTENT THE LOCATION OF THE DAMAGE AND THE INNER EDGE OF THE LEFT REAR WHEEL. I'VE ENCLOSED PICTURES OF A 'REPLACEMENT' PIPE THAT WILL HAVE TO BE EPOXIED TO CONTAIN VAPORS AND PREVENT FUEL SPILLAGE UNLESS A PRISTINE PIPE IS FOUND. GIVEN THE EMISSIONS ISSUE ALONG WITH FUEL SPILLAGE WHEN FUELING THE VEHICLE, THERE'S A HIGH LIKELYHOOD OF FURTHER DAMAGE AND POSSIBLE FIRE HAZARD. I'D RECOMMEND A METAL SHIELD BE RETROFITTED TO PREVENT CONTACT FROM THE LEFT TIRE AND THE FUEL FILLER NECK

NHTSA ID

10908573

Incident

Jun 11, 2016

Mileage

161,000 mi

IT STARTED OUT AS A SMALL OIL LEAK, BUT I RECENTLY NOTICED THE LEAK HAS EXPANDED SIGNIFICANTLY. IT'S DIFFICULT TO PINPOINT THE LEAK, BUT AN OIL PAN UNDER THE CAR SHOWS SIGNIFICANT PUDDLING OF OIL. A SEALER/CONDITIONER DOESN'T APPEAR TO HAVE BEEN AFFECTED. WHILE ONLINE, I NOTED THAT THE 3800CC 3.8L ENGINE SEEMS NOTORIOUS FOR THIS PROBLEM, AND OTHER MODELS OF GM CARS APPEAR TO BE SUBJECT TO A RECALL. NOT SO THE BUICK, WHICH TO ME, HAS THE SAME ENGINE. GIVEN THAT IS IS KNOWN NOW, I'M CONCERNED THAT THIS LOW PRODUCTION VEHICLE WAS LEFT OUT OF THE RECALL AND SHOULD BE INCLUDED. PUDDLE OF OIL PHOTO ENCLOSED. THIS CONDITION IS MOST NOTICEABLE WHILE THE VEHICLE IS STATIONARY.

NHTSA ID

10908561

Incident

Sep 21, 2016

Mileage

161,000 mi

TL* THE CONTACT OWNS A 1998 BUICK RIVIERA. WHILE ENTERING THE VEHICLE, THE CONTACT NOTICED ENGINE OIL ON THE GROUND UNDER THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE VALVE COVER GASKET FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 15V701000 (ENGINE AND ENGINE COOLING). THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 56,513. UPDATED 04/29/16*LJ *TR

NHTSA ID

10850080

Incident

Feb 10, 2016

Mileage

56,513 mi

TL* THE CONTACT OWNS A 1998 BUICK RIVIERA. WHILE STOPPED, THE CONTACT NOTICED SMOKE COMING FROM THE ENGINE COMPARTMENT OF THE VEHICLE. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE CONTACT WAS A CERTIFIED MECHANIC WHO DIAGNOSED THAT THE VALVE COVER GASKET NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 170,000. UPDATED 04/07/16*LJ *JS

NHTSA ID

10824487

Incident

Feb 1, 2014

Mileage

170,000 mi

TL* THE CONTACT OWNS A 1998 BUICK RIVIERA. WHILE THE VEHICLE WAS PARKED, THERE WAS A PUDDLE OF OIL DRIPPING NEAR THE ENGINE AREA. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 300,000.

NHTSA ID

10786262

Incident

Oct 21, 2013

Mileage

300,000 mi

I STARTED MY CAR, 98 BUICK RIVIERA, AND TURNED THE SEAT HEATER ON. I CAME BACK 5 MINUTES LATER AND STARTED DRIVING MY CAR TO WORK. ABOUT 4 MINUTES AFTER I LEFT MY HOUSE I STARTED SMELLING SMOKE LIKE SOMETHING WAS BURNING BUT I WAS VERY NEAR MY WORK SO I JUST KEPT GOING. AT WORK WHEN I STEPPED OUT OF MY CAR I NOTICED THAT THERE WAS A SMALL FIRE ON MY SEAT AND THAT MY LEATHER COAT WAS BURNING. I PUT OUT THE FIRE AND DISCONTINUED THE USE OF MY SEAT HEATER. *TR

NHTSA ID

10215716

Incident

Jan 20, 2008

Mileage

200,000 mi

STEERING WHEEL HAS DEVELOPED A VERY SIGNIFICANT "WOBBLE" WHICH EXISTS REGARDLESS OF WHAT TILT POSITION IT IS IN. THE WOBBLE IS DIAGONAL, FROM NORTHEAST TO SOUTHWEST IN DIRECTION, AND THE APPARENT PIVOT POINT OF THE WOBBLE IS JUST BEHIND INSTRUMENT PANEL LEVEL. HAD CAR AT DEALER FOR OTHER WORK, AND THEY COMMENTED ON IT TOO. DID NOT CALL IT A SAFETY ISSUE THOUGH... WANTED $120 TO FIX IT. I DECLINED AT THE TIME, SINCE THEY DIDN'T THINK THERE WAS A SAFETY CONCERN. I WOULD TEND TO DIFFER WITH THEIR OPINION THOUGH, AND FEEL THEY SHOULD REPAIR THIS AT NO CHARGE DUE TO IT BEING THE STEERING MECHANISM INVOLVED. I'VE HEARD THIS COMPLAINT FROM MANY OTHER 95-99 RIVIERA OWNERS, AND IT SEEMS TO BE EPIDEMIC AMONG THESE CARS. *TR

NHTSA ID

10205663

Incident

Oct 2, 2007

TL*THE CONTACT OWNS A 1998 BUICK RIVIERA. WHILE DRIVING 40 MPH, THE VEHICLE CONTINUED TO ACCELERATE AND WOULD NOT STOP WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL WITH BOTH FEET. HE DROVE ON THE SHOULDER AND HAD TO PLACE THE VEHICLE IN NEUTRAL FOR IT TO STOP. THE CONTACT OPENED THE HOOD NOTICED THAT THE PLASTIC SHIELD SEPARATED THAT COVERS THE MOTOR. HE WAS ABLE TO TAPE THE SHIELD BACK AND DROVE THE VEHICLE TO HIS RESIDENCE. THE DEALER STATED THAT THE SUPERCHARGER WASTE GATE VALVE SEPARATED AND NEEDED TO BE REPAIRED. THE MANUFACTURER ADVISED HIM TO GET AN EVALUATION FROM THE DEALER. THE DEALER DECIDED TO REDUCE THE LABOR COST TO $223.43. THE CURRENT MILEAGE WAS 57,728 AND FAILURE MILEAGE WAS 57,617. UPDATED 12/12/07

NHTSA ID

10203682

Incident

Sep 15, 2007

Mileage

57,617 mi

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

This informational bulletin provides information for dealers/technicians on Procedures to Unlock Delco Radio with Theftlock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.  The PI update to version D is to advise the unlock procedure is temporarily unavailable.  E version update is to add administrative details.

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.  The PI update to version D is to advise the unlock procedure is temporarily unavailable.