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Engine coolingPart report

1998 Buick Lesabre Engine cooling Problems

Complaints
196about this part
Share
49%of 400 total for the year
Median mileage
67,212miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 196 complaints about the engine cooling of the 1998 Buick Lesabre, 49% of the 400 complaints for this model year. Where a mileage was given, the median is 67,212 miles. 1 of these say a crash was involved and 29 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My intake manifold gasket was made of plastic and my engine locked up, I was informed from my mechanic that GM was aware of this problem and came out with a better one made of metal. This a costly mistake leading to 850 dollars of repair, that could have been prevented if GM would have stepped up with this in the first place and been fixed with the new gasket instead of causing more damage then needed.”

NHTSA complaint #10263584, filed 2009-03, 150,000 miles

“After owning this car for less than 3 months I noticed coolant tank empty, took it to dealer who charged me $342 for new water pump, still loosing coolant. Come to find out after a sludge was found in engine that intake plenum was cracked allowing coolant into cylinders, damaging the bearings and now am paying for a new motor. Gm denies problems exist. This car has only 50,000m miles.”

NHTSA complaint #10023752, filed 2003-06, 50,350 miles

“1998 Buick Lesabre. Plenum gasket on the intake manifold fails and allows coolant to get into engine. Then engine dies in the road causing people to slam on breaks. No wrecks. This is a well know problem with Lesabre's but Buick has failed to correct the problem. I had to pay $1200 to fix car and it now probably has engine damage. I would like Buick to come forward with this and let people know about it. This has to stop!”

NHTSA complaint #10106385, filed 2005-01, 58,486 miles

“I purchased a '98 Buick Lesabre - from my brother-in_law, it only had 70,000 miles on it when the head gasket blew causing me to rebuild the top section of the motor--then after that was fixed and I drove the car for approximately 3 months more -- the bottom part of the engine blew--and I had to replace the complete engine not knowing what caused this problem. The car was always maintained by the dealership boyle Buick in bel air, md.”

NHTSA complaint #10016711, filed 2003-04, 71,456 miles

“98 Buick Lesabre. 3.8 driving up hill, down hill, coasting, it doesn't matter. 1 or 2 times a week the engine just dies. Sometimes I can catch it full throttle and it will pick up and run fine. Or throw it in on the fly and restart instantly. New fuel pump and filter usually starts good. Some times I have to stop cranking it after 5 sec 1,2,3 times before it starts. This only happens 1 time every week or two. I can't let anyone else drive the car for fear they will pull out in front of a truck and the car will quit.”

NHTSA complaint #10184631, filed 2007-03, 100,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200511%
200485%
200385%
2002186%
2001289%
20007812%
19996933%
199819649%
199711028%
19961818%
1995148%
19943623%
19932513%
19922614%
1991517%
1990511%
198927%
1988210%
1987615%
1986638%
1985120%
1984240%

Other parts of the 1998 Buick Lesabre

Fuel system
76 complaints
Electrical system
50 complaints
Brakes
26 complaints
Transmission and drivetrain
20 complaints
Steering
15 complaints
Suspension
15 complaints
Visibility (wipers, defrost, mirrors)
12 complaints
Air bags
11 complaints
Other or unknown
11 complaints
Engine
8 complaints
Equipment
5 complaints
Seat belts
5 complaints

← All problems reported for the 1998 Buick Lesabre

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology