Same problem on my 2003 buick regal..i ran a jumper wire in the fi=use box from the electronic heater control fuse to my wiper fuse..its been working perfect for a year !
SOURCE: Installed a new AC Compressor in a 97 Buick LaSabre
Yes there is a way to kick on the a/c compressor.In my honest opinion you should get the system pulled down with a vacum to remove any moisture from the system before adding refrigerant.Doing the keeps the system running good and if you don't it may void your warrenty on the compressor.To get the compressor running to ad refrigerant locate the low pressure switch in one of the a/c tubes (It should be a two wire pigtail)now unplug it and jump it with a paper clip or jumper wire.With the car running you should hear and see the compressor kick on.Please be carfull there is nothing in the way of moving parts before you begin.
SOURCE: don't know if a 2004 buick lasabre has rear disc or drum brakes?
it has disc brakes front and rear.
SOURCE: where is the oil sending sensor on a 95 buick
typically on the back side of the engine in an impossible to reach spot. you will likely have to take this car in to get serviced.
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