On a 98 it is located on the front valve cover. It's a little black box with 2 hoses and a wire going into it right in the front of you when you open the hood. Not sure about a 2001 but I hope that points you in the right direction.
left rear wheel well
on the bottom of the charcoal canister on the drivers side of the engine compartment.
Charcoal canister is underneath your engine next to the gas tank. Cant miss it.
Where is the a Alternator located on 1999 buick lesabre
Where is the thermostat located on a 1987 Buick LeSabre?
Under air the cleaner housing, under hood front driver's side.
where is the engine controle module located in a 1995 buick lesabre
where is the relay located on a 87 lesabre
where is the thermostat located in a 2003 buick lasaber
driver side, rear fender, go under vehicle its square with two lines.
fuel pump relay location in 1994 buick lesabre
The battery for the Buick LeSabre (2000) is located under the rear seat cushion.