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1999 Chevrolet Lumina

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 1999 Chevrolet Lumina do not stand out strongly from the model-year median of 126.

About this comparison →

When problems were reported

Mileage at the reported incident

49 reports with mileage · 54 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Engine And Engine Cooling. Review the 41 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes, Hydraulic. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

9 crash reports4 fire reports8 injury reports

What owners actually said

103 reports
51,000 miles · Sep 6, 2007
Engine And Engine Cooling

TL*THE CONTACT OWNS A 1999 CHEVROLET LUMINA. WHEN THE CONTACT TOOK THE VEHICLE TO THE DEALER FOR SCHEDULED MAINTENANCE, SHE WAS INFORMED THAT THE INTAKE GASKET NEEDED TO BE REPLACED. THE REPAIR WILL COST $1,000. THE CURRENT AND FAILURE MILEAGES WERE 51,000.

NHTSA ODI #10202085

Mileage unknown · Apr 24, 2007
Steering

1999 LUMINA CUSTOMER STATES THAT HE HAD TO REPLACE THE RIGHT OUTER TIE ROD BECAUSE IT WAS ABOUT TO FALL OFF**CC THE CONSUMER STATED WHEN THE JOINTS WERE SEALED AT THE MANUFACTURING PLANT, THEY SHOULD HAVE PROPERLY LUBRICATED THE PART. *JB

NHTSA ODI #10189030

111,000 miles · Mar 20, 2007
Electrical SystemEngine And Engine CoolingPower Train

VEHICLE WAS RUNNING HOT. TOOK IT TO MIDAS, MIDAS WHO SAID IT WAS A INTAKE MANIFOLD PROBLEM WITH THE PLASTIC CAP AND NEEDED TO REPLACE IT FOR TOTAL OF 700.00. MIDAS SAID THEY HAVE HAD A LOT OF CUSTOMERS WITH SAME PROBLEM DUE TO ANTIFREEZE STRENGTH THE DEALERSHIP WAS REQUIRED TO PUT INTO VEHICLE. ALSO HAVING PROBLEMS WITH VEHI…

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VEHICLE WAS RUNNING HOT. TOOK IT TO MIDAS, MIDAS WHO SAID IT WAS A INTAKE MANIFOLD PROBLEM WITH THE PLASTIC CAP AND NEEDED TO REPLACE IT FOR TOTAL OF 700.00. MIDAS SAID THEY HAVE HAD A LOT OF CUSTOMERS WITH SAME PROBLEM DUE TO ANTIFREEZE STRENGTH THE DEALERSHIP WAS REQUIRED TO PUT INTO VEHICLE. ALSO HAVING PROBLEMS WITH VEHICLE STALLING, AND WHEN FILLING VEHICLE UP WITH GAS, WHICH SEEMS TO RUN OUT OR MAYBE LEAK OUT FAST. *AK

NHTSA ODI #10185597

Mileage unknown · Aug 25, 2006
Exterior Lighting

BRAKE LIGHTS NOT WORKING OR WORKING ON/OFF. FOUND THE CAUSE TO BE THE TURN SIGNAL SWITCH AFTER REPLACING THE STOP LIGHT SWITCH SEVERAL TIMES. THIS PROBLEM IS VERY DANGEROUS AND SHOULD BE REPAIRED BY THE MANUFACTURER AT NO COST TO THE OWNERS OF THE CARS. *JB

NHTSA ODI #10166564

169,000 miles · Aug 12, 2006
Exterior Lighting

BRAKE LIGHTS DO NOT WORK. THIRD BRAKE LIGHT IN BACK DASH WORKS. THE BRAKE LIGHTS WORK SOMETIMES WHEN THE TURN SIGNAL SWITCH IS USED. BULBS AND FUSES ARE O.K. *JB

NHTSA ODI #10165309

48,000 miles · Feb 24, 2006
Electrical SystemEngine And Engine Cooling

DT*: THE CONTACT STATED THE PASSENGER COMPARTMENT INTERMITTENTLY FILLS WITH FUMES AFTER THE ENGINE HAS BEEN RUNNING FOR 30 MINUTES. THE VEHICLE WAS TAKEN TO THE SERVICE DEALER ON THREE OCCASIONS, BUT THE DEALER WAS UNABLE TO DUPLICATE THE PROBLEM BECAUSE THE FUMES WERE NEVER PRESENT AT THE TIME OF INSPECTION. DURING THE LAST …

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DT*: THE CONTACT STATED THE PASSENGER COMPARTMENT INTERMITTENTLY FILLS WITH FUMES AFTER THE ENGINE HAS BEEN RUNNING FOR 30 MINUTES. THE VEHICLE WAS TAKEN TO THE SERVICE DEALER ON THREE OCCASIONS, BUT THE DEALER WAS UNABLE TO DUPLICATE THE PROBLEM BECAUSE THE FUMES WERE NEVER PRESENT AT THE TIME OF INSPECTION. DURING THE LAST INSPECTION THE DEALER DETERMINED A PLASTIC GROCERY BAG WAS TRAPPED OVER THE CATALYTIC CONVERTER. THE BAG WAS ALMOST COMPLETELY DISINTEGRATED FROM THE HEAT OF THE CONVERTER. THE DEALER DETERMINED THIS COULD BE A POSSIBLE CAUSE OF THE FUMES AND THE BAG WAS REMOVED. APPARENTLY THIS WAS NOT THE CAUSE OF THE PROBLEM AS THE FUMES RETURNED AGAIN YESTERDAY, BUT THE VEHICLE WAS NOT RETURNED TO THE DEALER FOR INSPECTION WHILE THE FUMES WERE PRESENT.

NHTSA ODI #10151086

Mileage unknown · Jan 19, 2006
Tires

ON AUGUST 28, 2005 THE LEFT FRONT TIRE ON MY VEHICLE SUFFERED A MAJOR TREAD SEPARATION. THE ONGOING ATTEMPT TO RESOLVE THIS PROBLEM WITH THE COOPER TIRE AND RUBBER COMPANY OF FINDLAY, OHIO, IS DISTURBING TO SAY THE LEAST. IT IS MY UNDERSTANDING THAT YOUR AGENCY WISHES TO KNOW OF THESE SITUATIONS. *NM

NHTSA ODI #10144076

Mileage unknown · Oct 10, 2005
Engine And Engine Cooling

I HAVE A 1999 CHEVROLET LUMINA. A COUPLE OF WEEKS AGO MY CAR STARTED TO OVER HEAT. IT BECAME INCREASINGLY WORST. THE CAR WAS LEAKING COOLANT SEVERELY. I TOOK THE CAR IN TO THE SHOP AND WAS TOLD IT WAS THE INTAKE MANIFEST GASKET. I NEVER KNEW HOW MUCH THIS WAS A PROBLEM UNTIL I STARTED TO RESEARCH THIS. IT WILL COST BE ABOUT 350.…

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I HAVE A 1999 CHEVROLET LUMINA. A COUPLE OF WEEKS AGO MY CAR STARTED TO OVER HEAT. IT BECAME INCREASINGLY WORST. THE CAR WAS LEAKING COOLANT SEVERELY. I TOOK THE CAR IN TO THE SHOP AND WAS TOLD IT WAS THE INTAKE MANIFEST GASKET. I NEVER KNEW HOW MUCH THIS WAS A PROBLEM UNTIL I STARTED TO RESEARCH THIS. IT WILL COST BE ABOUT 350.00 DOLLARS TO HAVE IT FIXED. I HAVE ALSO HAD TO REPLACE MY WATER PUMP. *NM

NHTSA ODI #10139202

2,400 miles · Sep 10, 2005
Service Brakes, HydraulicCrash

CONCERN: 1999 LOW MILEAGE CHEVROLET LUMINA. PROBLEMS WITH THE ABS AND TRACTION CONTROL SYSTEMS. CORROSION OR DEFECTIVE WHEEL SENSORS CAN CAUSE TOTAL LOSS OF BRAKING AT SLOW SPEEDS. MY CUSTOMER EXPLAINED THAT HIS ABS LIGHT WAS ON FOR SEVERAL MONTHS. HE HAD DRIVEN THREW HIS FENCE AFTER TURNING INTO HIS DRIVEWAY. HE MENTIONED THAT …

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CONCERN: 1999 LOW MILEAGE CHEVROLET LUMINA. PROBLEMS WITH THE ABS AND TRACTION CONTROL SYSTEMS. CORROSION OR DEFECTIVE WHEEL SENSORS CAN CAUSE TOTAL LOSS OF BRAKING AT SLOW SPEEDS. MY CUSTOMER EXPLAINED THAT HIS ABS LIGHT WAS ON FOR SEVERAL MONTHS. HE HAD DRIVEN THREW HIS FENCE AFTER TURNING INTO HIS DRIVEWAY. HE MENTIONED THAT HE WOULD LOSE ALL BRAKING IF THE TRACTION CONTROL AND ABS LIGHT CAME ON AT THE SAME TIME, THE ABS AND TRACTION CONTROL UNIT WAS ACTUATING. IT WAS MY UNDERSTANDING THAT IF THE ABS LIGHT WAS ON IN ALL VEHICLES THE ABS WOULD DROP OUT OF THE BRAKING SYSTEM RENDERING THE VEHICLE WITH CONVENTIONAL BRAKES. I GUESS THIS IS NOT TRUE WITH SOME LATE MODEL GMS. I HAVE LEARNED THAT DIAGNOSING INTERMITTENT WHEEL SENSORS AND WIRING IS A DAUNTING TASK. THE VEHICLE WE WORKED ON HAD A DEFECTIVE RIGHT FRONT WHEEL SENSOR. WE SCOPED THE SIGNAL FROM THE SENSOR AND IT SHOWED PERFECT AMPLITUDE, VOLTAGE AND WAVE FORM. FURTHER TESTING SHOWED IT READ OPEN WITH AN OHMMETER. UNLESS THE CIRCUIT IS COMPLETELY OPEN OR SHORTED TESTING THE WHEEL SENSORS AND WIRING WITH AN OHMMETER OR A SCOPE IS USELESS AT TIMES. IN THE PAST FOLLOWING A GM TROUBLE CODE FLOW CHART WAS USELESS, THE FIX WAS TO REWIRE AND REPLACE THE SUSPECT PARTS. . I FEEL THAT GM SHOULD RECALL THESE VEHICLES. OR AT LEAST OFFER THE REPLACEMENT PARTS INCLUDING A REPROGRAMMED TRACTION CONTROL/ABS CONTROLLER AT A REASONABLE PRICE. SEARCHING THE ARCHIVES I FOUND ONE OTHER LATE MODEL GM WITH THE SAME TYPE OF PROBLEMS AND LOSS OF LOW SPEED BRAKING. 1997 PONTIAC GRAND AM ENGINE: 2.4 L / 146 CID / 4 CYL / GAS / DOHC FUEL: FUEL INJECTION IGNITION: DISTRIBUTORLESS TRANS: 4-SPEED AUTOMATIC TRANSAXLE (ELECTRONIC) MILEAGE: 95,000 MI VIN: [XXX] TIME. TODAY CUSTOMER COMES IN WITH A COMPLAINT OF CLICKING, LOSS OF PEDAL, AND NO STOP. CUSTOMER WAS IN TODAY WE GOT THE ABS TO ACTUATE AND HE SAID THATS WHAT IT WAS DOING.*JB UPDATED 07/19/2012 *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.

NHTSA ODI #10136111

61,000 miles · Apr 5, 2005
Engine And Engine Cooling

MY CAR WAS PARKED IN MY GARAGE AND I NOTICE ANTI FREEZE LEAKING. I HAD THE CAR LOOKED AT AND WAS TOLD IT IS THE INTAKE VAVLE THAT NEEDS TO BE REPLACED. I AM GOING TO HAVE THE REPAIR DONE AND YES THE REPLACED PART IS AVAILABLE. MY VEHICLE IS A 1999 CHEVY LUMINA AND I ONLY HAVE 60,000 MILE ON IT. I HAVE MAINTAINED MY CAR ACCORDING…

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MY CAR WAS PARKED IN MY GARAGE AND I NOTICE ANTI FREEZE LEAKING. I HAD THE CAR LOOKED AT AND WAS TOLD IT IS THE INTAKE VAVLE THAT NEEDS TO BE REPLACED. I AM GOING TO HAVE THE REPAIR DONE AND YES THE REPLACED PART IS AVAILABLE. MY VEHICLE IS A 1999 CHEVY LUMINA AND I ONLY HAVE 60,000 MILE ON IT. I HAVE MAINTAINED MY CAR ACCORDING TO THE MANUAL AND HAVE HAD SEVERAL MAJOR PROBLEMS WITH IT. I HAVE HAD TO REPLACE 2 FUEL ENJECTORS. I REPLACED THE ALTENATOR AT 41,900. I AM VERY GOOD AT KEEPING MY CAR MAINTAINED AND IT HAS NEVER BEEN DRIVEN ROUGH. I AM THE ONLY OWNER AND THE CAR HAD LESS THAN 100 MILES ON IT WHEN I BOUGHT IT. *AK

NHTSA ODI #10116426

Official recalls

2

15V701000 · Engine And Engine Cooling:engine; Engine And Engine Cooling:exhaust System:manifold/header/muffler/tail Pipe

Oct 26, 2015

General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.

Consequence & remedy

Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.

Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engine’s front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.

Additional source detail variants (2)

Engine And Engine Cooling:exhaust System:manifold/header/muffler/tail Pipe

General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.

Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.

Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engine’s front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.

Engine And Engine Cooling:engine

General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.

Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.

Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engine’s front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.

09V116000 · Engine And Engine Cooling

Apr 8, 2009

GENERAL MOTORS IS RECALLING 1,497,516 MY 1997-2003 BUICK REGAL, MY 1998-2003 CHEVROLET LUMINA, MONTE CARLO AND IMPALA, MY 1998-1999 OLDSMOBILE INTRIGUE, MY 1997-2003 PONTIAC GRAND PRIX VEHICLES EQUIPPED WITH A 3.8L V6 NATURALLY ASPIRATED ENGINE. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH DROPS OF ENGINE OIL MAY BE DEPOSITED ON THE EXHAUST MANIFOLD THROUGH HARD BRAKING.

Consequence & remedy

Consequence: IF THE MANIFOLD IS HOT ENOUGH AND THE OIL RUNS BELOW THE HEAT SHIELD, IT MAY IGNITE INTO A SMALL FLAME AND MAY SPREAD TO THE PLASTIC SPARK PLUG WIRE CHANNEL AND BEYOND INCREASING THE RISK OF AN ENGINE COMPARTMENT FIRE.

Remedy: DEALERS WILL REPLACE THE ENGINE’S FRONT VALVE COVER AND FRONT-VALVE-COVER GASKET WITH NEW PARTS OF AN IMPROVED DESIGN AND REMOVE THE ENGINE’S PLASTIC COVER AND PLASTIC OIL-FILL-TUBE EXTENSION, FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING MAY 2016. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, AND PONTIAC AT 1-800-620-7668 OR HTTP://WWW.PONTIAC.COM OR HTTP:WWW.GMOWNERCENTER.COM.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

EA02030 · Engine Compartment Fires

Opened Oct 22, 2002 · Closed Mar 9, 2004

Status: closed (inferred from source dates) · Fuel System, Gasoline; Fuel System, Gasoline:delivery; Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

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.

Additional source detail variants (3)

Fuel System, Gasoline:delivery

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.

Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

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.

Fuel System, Gasoline

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.