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 2005 Buick LeSabre
2005 Buick LeSabre
2005 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.
2005 Buick LeSabre Questions and Answers
the speedometer and tachometer do not register...car runs fine
the tach and speedo acted up, pulled the fuses to the cluster they were fine re started and speedo and tach worked but not fuel this car sat for 1 1/2 years b4 we purchased it. i did replace the ba...
My air conditioner is not blowing cold air. After it runs for a while it will blow coolish air but never cold. I put in refrigerant and it worked for a day. It won't take more refrigerant.
2005 Buick LeSabre Reviews
I have over 200,000 miles on my car now. I have just had my first real issue, which was an overheating problem. Replaced some sensors, thermostat and a few other items. No longer have overheating.
My gas guage has recently stopped working (the needle doesn't indicate gas level) so I rely on the computerized information to determine my approx gas level. I do average over 30 mpg daily and on the hwy I average close to 33.
This is my 2nd Buick. Love my car.
I bought my 2005 Lesabre brand new from the Buick dealer. Right away it had transmission problems, but of course when they drove it they said they didn't notice it. Right away the car vibrated very bad. The dealer said that was just the way the car is made? Ive had 3 LeSebre's & NEVER did they run so rough! Also, right away after purchasing the car when it rains, at high speeds the brakes do not work on first try, you have to hit them again to begin to stop(very scary). Then in the middle of summer the heat came on & was stuck (could not turn it off) with never turning the heat on, coming out full blast. It always has run low on oil since about 3 months old. The dealer checked couldn't find any leaks. All the lights went out in the steering wheel at about 45,000 miles including all the lights for the heating & cooling controls went out before the warranty expired, the dealer "fixed it" then before 50,000 one by one they all went out again. The heated seats quit working while still under the 36,000 warranty the dealer fixed it but after the warranty expired they quit working again. When the car was only a little over 3 years old the tires began leaking air. Took it in, the chrome rims are so corroded they will not hold the air. The air bag sensor went out around 65,000. The back lights as well as the brake lights constantly go out as well as the front headlights but not quite as often. The ashtray has broke more than once(falls on the floor). One of the power outlets quit working, the heat vent on the passenger side does not work, also the center counsel will not stay shut.These are all things that starting falling apart at only a couple to few years old. Also at about 85,000 the speedometer went out. The auto shop said it was an error in that years model & in order to fix it, the dash has to be taken out & sent to another state to have it fixed, very expensive. He told me GM was paying for the repair but only up to 75,000(just my luck) Other than the "superficial" things... the engine appears to be holding up strong with only normal maintenance issues. Anyone else have these problems? I would like to keep this car till 200,000. My 2nd buick I ran till 188,000 before I sold it & it ran great! Im very disappointed in Buick for the 2005 Buick(im wondering if it was because the last year the model was made?) I have to add oil usually right before 3,000 miles before i get in to change it around 3,000. I found it weird,unsafe & inconvenient GM placed the battery underneath the back passenger's seat. Also, it is not vented properly or something because we get fumes of sulfur occasionally in the car even after putting in a new one. Also, the transmission is still an annoyance but im hoping now at 152,000 miles if it was going to go out completely, it would of by now (fingers crossed). The ashtray has broke more than once(falls on the floor). One of the power outlets quit working, the heat vent on the passenger side does not work, also the center counsel will not stay shut. PROS: at 155,000 miles the fuel pump, alternator, water pump still have not needed to be replace. Also, the battery lasted a good 7 years(wow).
Have a 2005 Buick Lasabre purchased new, oil changeed every 2-3 thousand miles. Last oil change notice the oil pressue would go to zero under hard accelartion. Slamming on the brake did not change, but after a few seconds the oil prussue would return to "normal" which is a stagger 130lb, which as been since new. I was wondering if this is an oil sending unit or a computer, or a oil pump, How do I check this out?
Bought the car in 2006 as a Certified Used Car from a GM dealer. Had 24,000 miles on it. Great vehicle. I am on the road a lot each week averaging 30 - 40K yearly. The car rides like a dream and the Stabili-trak system has saved my bacon on more than one occasion. Still averages close to 30mpg hiway and 24 city. I have found that as long as you keep to the published maintenance schedule the car performs great.
Vehicle now has 114,000 miles on it and runs great. There have been some cosmetic issues in the interior and on the dash. Many of the little lights in the radio and on the steering wheel are out and I need to replace the hinge on the center console. Also need to replace the stop on the ashtray. All these parts are dealer only and may wait a while for repair.
Only major repairs I have made was the CV joints replaced at about 100,000 miles. Have changed the rotors and pads a couple of times - bu that is just use. Replaced battery at the 4 year point.
Sorry to see this model taken off Buick's lineup.
I got my Buick used in 2006. It's an 05. I love my car. It runs very smooth and great on long trips. Really haven't had any problems with replacing anything except for now. The lower intake manifold gasket needs to be replaced and the transmission fluid is leaking. Other than that everything runs great.