Two problems related to gas recirculation valve (egr valve) have been reported for the 2000 Buick Lesabre. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Buick Lesabre based on all problems reported for the 2000 Lesabre.
Hard starting, lack of power, hesitation gm dealer diagnosed intake leak by egr valve (air and coolant leaks) dealer replaced intake plenum (non warranty).
Engine stopped while driving down a hill, about 55 mph, and entering a left curve. Vehicle, w/o brakes or steering, pulled to the right, going onto the berm and then doing a 360 degree turn in the middle or roadway, hitting guardrail and then sliding off roarway, over a slope, into a field.