1999 Buick Lesabre

THIS CONCERNS A DEFECTIVE DESIGN OF THE INTAKE MANIFOLD USED BY GM ON 1998, 1999, 2000, AND SOME 2001 BUICK LESABRE'S EQUIPPED WITH THE 3800 SERIES II V6 ENGINE. FOLLOWING THE FAILURE AND RESULTANT HYDRAULIC ENGINE LOCK OF A NEIGHBOR'S 1999 BUICK LESABRE WITH APPROXIMATELY 80,000 MILES ON THE ODOMETER, I VISITED OUR LOCAL BUICK DEALER (LEE CHEVORLET/BUICK - WASHINGTON, NC) TO DISCUSS WHAT APPEARS FROM RESEARCH DONE VIA THE INTERNET TO BE A FREQUENTLY ENCOUNTERED PROBLEM ON THESE VEHICLES SO EQUIPPED. IT SEEMS THAT A FAILURE OF THE INTAKE MANIFOLD IS A VERY COMMON PROBLEM ON VEHICLES WITH ABOUT 80K MILES ON THEM, MY WIFE DRIVES SUCH A VEHICLE - A BUICK LESABRE LIMITED PURCHASED FROM LEE CHEVORLET, WASHINGTON, NC ON 2/24/99 IT CURRENTLY HAS 78,000 MILES ON THE ODOMETER. THE DEALERSHIP OWNER, AND THE SERVICE MANAGER FREELY REVEALED THAT THIS IS A SERIOUS AND CHRONIC PROBLEM WITH THESE VEHICLES AND IS THE DIRECT RESULT OF A POORLY DESIGNED PART USED ON THEM. THEY ARE PRONE TO FAILURE AT ABOUT THE 80K MILE POINT WHICH RESULTS FROM AN INTERNAL (NOT APPARENT) FAILURE DUE TO MATERIALS DEGRADATION. THE RESULT IS VERY FREQUENTLY THE DISCHARGE OF ENGINE COOLANT INTO THE CYLINDER(S) RESULTING IN A HYDRAULIC LOCK UP WITH FREQUENTLY DISASTROUS RESULTS INVOLVING NOT ONLY AN ENGINE SEIZURE WHILE IN OPERATION BUT ALSO ASSOCIATED SIGNIFICANT ENGINE PARTS DAMAGE. THEIR RECOMMENDATION FOR A REMEDY TO HANDLE THIS DANGEROUS SITUATION IS TO HAVE THE INVOLVED PARTS (TOP AND BOTTOM INTAKE MANIFOLDS) REPLACED WITH "THE GM REPLACEMENT DESIGN RESULTING FROM THE PROBLEM. THESE VEHICLES ARE ALL +/- 10 YEARS OLD AND HAVE OUTLIVED THEIR ORIGINAL 3YR/36,000 MILE WARRANTY. THEY INDICATED THAT THE ONLY WAY TO PERHAPS GET GM TO PARTICIPATE IN A REMEDIATION OF THIS PROBLEM IS TO SPEAK WITH THE CUSTOMER ASSISTANCE GROUP WHICH I DID YESTERDAY. THEY DENY EXISTENCE OF THE PROBLEM AND WILL PROVIDE NO ASSISTANCE IN THE $800-900 REPAIR. FAILURE OF THIS PART IN OPERATION COULD BE FATAL. *TR

TL*THE CONTACT OWNS A 1999 BUICK LESABRE. THE CONTACT STATED THAT HER VEHICLE SHUTS OFF AND FAILS TO RESTART. HOWEVER, WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE SHUT OFF AND THEN RESTARTED IMMEDIATELY. LATER THAT SAME DAY, THE CONTACT STATED THAT THE VEHICLE WOULD NOT RESTART FOR APPROXIMATELY AN HOUR AND A HALF. WHILE IDLING AT A TRAFFIC LIGHT, THE VEHICLE SHUT OFF AND TOOK 15 MINUTES BEFORE IT RESTARTED. THE FAILURE CONTINUED TO RECUR INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN ELECTRICAL MECHANIC SHOP, BUT THEY COULD NOT IDENTIFY THE CAUSE OF THE FAILURE. THE VEHICLE WAS ALSO TAKEN TO FIRESTONE AND REPAIRED; HOWEVER, THE FAILURE RECURRED. THE FAILURE MILEAGE WAS 55,000 AND CURRENT MILEAGE WAS 58,439.

WIFE'S 1999 BUICK LESABRE WITH 90,000 MILES ON IT WAS BURNING ANTIFREEZE IN ENGINE. I WAS TOLD BY A CERTIFIED GM MECHANIC TO TRY TIGHTENING THROTTLE BODY MOUNTING NUTS BECAUSE BEING TOO LOOSE WAS A COMMON PROBLEM FROM THE FACTORY. DID THAT 6 MONTHS AGO AND IT SEEMED TO HELP EVEN THOUGH THE MANIFOLD THROTTLE BODY MOUNTING SURFACE WAS WARPED DUE TO THE ENGINE HEAT. OVER THE PAST MONTH THE CAR BECAME INCREASINGLY HARD TO START, BURNED LARGE AMOUNTS OF ANTIFREEZE, AND WOULD STALL INTERMITTENTLY. ON MARCH 13, 2008 I TOOK THE INTAKE MANIFOLD OFF THE ENGINE AND FOUND ANTIFREEZE IN THE INTAKE DUCT GOING TO THE AIR FILTER AND ANTIFREEZE POOLED IN THE INTAKE MANIFOLD. THIS WAS CAUSED BY TWO SEPARATE DEFECTS, THE UPPER INTAKE MANIFOLD GASKET NOT SEALING PROPERLY TO THE LOWER INTAKE MANIFOLD (WAS LEAKING IN TWO DIFFERENT SPOTS) AND THE LEAKING THROTTLE BODY TO INTAKE MANIFOLD GASKET (WAS LEAKING COOLANT INTO THE INTAKE DUCT TO AIR FILTER), WHICH WAS CAUSED BY EXCESS HEAT FROM THE EGR PIPE WARPING THE UPPER MANIFOLD. ANOTHER SERIOUS PROBLEM WITH THE UPPER INTAKE MANIFOLD WAS THE HEAT FROM THE EGR PIPE ERODED THE MANIFOLD TO A POINT THAT IT WOULD CAUSE LEAKING COOLANT TO ENTER THE INTAKE MANIFOLD IN THE NEAR FUTURE. THIS SEEMS TO ME TO BE A SAFETY CONCERN NOT ONLY FROM A STANDPOINT OF THE CAR STALLING AND BECOMING HARD TO STEER BUT I WORK IN THE OUTDOORS IN REMOTE LOCATIONS IN SUB ZERO WEATHER IN THE WINTER. I AM ALWAYS PREPARED FOR THE POSSIBILITY THAT MY CAR WON'T START AND I WILL HAVE TO WALK MILES TO THE NEAREST PHONE BUT SOMEBODY ELSE MAY NOT BE PREPARED AND IT LOOKS LIKE THIS DEFECT MIGHT BE DANGEROUS IF NOT FIXED. I REPLACED THE UPPER INTAKE MANIFOLD AND GASKETS WITH AN AFTERMARKET ONE AND THE CAR IS FINE NOW. *TR

TL*THE CONTACT OWNS A 1999 BUICK LESABRE. THE CONTACT HEARD A LOUD POPPING NOISE WHEN THE VEHICLE WAS SHIFTED INTO REVERSE. THE ENGINE THEN SHUT OFF WITHOUT WARNING. THE VEHICLE WAS TOWED TO THE DEALER AND THEY STATED THAT THE POWER STEERING PUMP BOLTS SEPARATED AND FELL INTO THE ENGINE. THE DEALER ONLY REPLACED THE BOLTS. THE CURRENT AND FAILURE MILEAGES WERE 50,700. *UPDATED 12/12/2007 *BF THE CONSUMER STATED IF THE BOLTS COULD NOT BE REMOVED FROM ENGINE BLOCK THEN THE REPAIRS WOULD COST $749.00. UPDATED 12/12/07 *TR

TL*THE CONTACT OWNS A 1999 BUICK LESABRE. WHILE DRIVING APPROXIMATELY 5 MPH, THE CONTACT HEARD A CLUNKING NOISE COMING FROM THE ENGINE COMPARTMENT. HE TOOK THE VEHICLE TO THE REPAIR SHOP AND WAS INFORMED THAT THE STABILIZER BAR SPLIT IN HALF. THE DEALER CURRENTLY DOES NOT HAVE THE PARTS TO REPAIR THE VEHICLE, HOWEVER, THE CONTACT WILL HAVE IT REPAIRED ONCE THE PARTS ARRIVE. THE CURRENT AND FAILURE MILEAGES WERE 66,000. UPDATED 11/14/07

1998 BUICK LESABRE LEAKING REAR WHEEL CYLINDER. CUSTOMER STATES CYLINDER WAS REPLACED FIVE TIMES IN 48,000 MILES DEALERSHIP TOLD CUSTOMER IT'S FROM NOT USING IT ENOUGH CUSTOMER IS THE ORIGINAL OWNER AND USES THE CAR ON A DAILY BASIS**SB THE CONSUMER WAS TOLD THAT DUE TO LIMITED DRIVING, CAUSED THE RUBBER PARTS TO DRY OUT AND CRACK. *JB