It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
Resources for the Repair and Maintenance of your 2003 Buick LeSabre
2003 Buick LeSabre
2003 Buick LeSabre Problems
The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.
The intake manifold gasket can develop external engine oil leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue.
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
The water pump may develop a coolant leak resulting in an engine overheating condition.
2003 Buick LeSabre Recalls (Recent)
2003 Buick LeSabre Questions and Answers
I had six adults in the car. Upon starting , I heard the compressor come on and stay on longer than usual. The compressor no longer comes on and the car appears to be in the high position. Poten...
I need to learn the location and cleaning process for the IACV.
how to replace rear turn signal bulb
This is the 2nd Buick LeSabre that the hood paint bubbled up. What is the problem? I had heard something about a recall. Anyone have knowledge of this? And does it apply if I bought the car used ...
2003 Buick LeSabre Reviews
I love my 03 Buick, but the electrical switch is driving me crazy, repair man said it would cost about $400.00 dollar, it's only one window that want go down.
I presently owned a 2003 Buick LeSabre Limited that has 41,098 miles on it. This has been the most reliable automobile that I have owened in my entire life. At the present I did have one recall concerning replacement of throttle body bolts, which was done and no farther problems with that system, however I had to have the lower intake manifold gasket set replaced around 38 thousand miles.I have heard from other 2003 Buick owners with the 3.8 engine installed in their cars who have experienced the same problem, however I haven't heard of a recall concerning this component failure at this time, however it is possible that others may have experenced this problem with their automobiles.
My wife has an 03 with 38,000 miles best car we have owned. A rear strut is leaking and I am going to replace both. That is the only problem to this point.
I bought the car with 92,000 miles on it in 2005. I now have over 300,000 miles on it and intend on driving it until the wheels come off. I have encountered small problems, as expected with this high mileage. I have replaced the radiator, fuel filter, water pump, leak around intake manifold (which I understand was a defect and happens to all 3.8 litres after 60,000 miles) and have only serviced the transmission twice since buying it. All-in-all this is one of the best cars I have owned. My previous car was a 1990 Olds Ninety-Eight and it was the cream of the crop. Lost the car in 2005 with 235,000 miles on it (would not start in the cold weather and to fix it would cost more than the care was worth! Too Bad:) I would recommend a Buick to anyone who wants a Cadillac ride at a Volkswagen price. I hope this review don't jinx my ride!
My wife's ride. Now has 120K. 30 to 35 mpg on hwy. Very smooth ride.
Front struts are starting to go. Never had a window problem. Still does not use oil. Had the same 3.8 engine in my 85 and never had a problem. Have the trans serviced (oil-filter) every 36K. So far, so good.