Last post on Aug 12, 2013 at 8:04 PM
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Buick LeSabre, Electrical, Sedan
#90 of 188 Re: 2001 Buick LeSabre AC Blower [cityslicker2]
Aug 06, 2008 (4:35 am)
You either have a blower motor that is not making contact or has gone bad or the other possibility is the blower control module which is the electonics that controls the blower motor speed. I have to check my service manual to be sure the nonautomatic air conditioning uses the blower control module which the dual control auto air does (the one with the digital temperature readout).
The hush panel above the passenger feet should be taken out. When the blower won't turn, try hitting on the blower motor area to vibrate it. It a round item maybe 6 inches in diameter that is a circle in a horizontal plane on the bottom of the heater AC unit. A worn one may make contact again with the vibration and that may be happening when you start driving. I have even read of someone taking the blower apart after removing it (5 screws?) and finding a contact inside wasn't made well, repairing that, and using the same blower motor.
The blower control module tends to fail in strange ways. Follow the power lead from the blower motor a few inches to where it connects to a small unit that is actually sticking into the air stream inside the heater case to keep it cool. Those are available from some various auto places for parts as well as the dealer and junkyards if you wish.
If you have the manual AC unit try turning the fan speed on high. The standard unit USED to use a resistor set where the resistors could break and sometimes make contact again. The resistors get power through a relay which also might fail. With that setup the high speed is a direct lead from the battery through another relay so usually the high speed would work when the lower speeds won't.
But don't hold me to the description for the resistors because those were used before the leSabre was built on the same chassis as the Seville and Aurora starting on 2000. I'll have to look at my service manual.
#91 of 188 Re: 2001 Buick LeSabre AC Blower [imidazol97]
Aug 21, 2008 (7:48 pm)
Thank you very much for your time and detailed suggestions on how to trouble shoot. Your a good guy! I will let you know how it turns out.
#92 of 188 Re: 2001 Buick LeSabre AC Blower [cityslicker2]
Sep 25, 2009 (11:17 am)
HI, I had the same problem on my 2002 blower motor. I would beat on the dash and it would start up. Got tired of that so I took the blower motor out and took it apart and found black soot pluging up the works. Cleaned it out put back together now works great........Alan................Note the blower motor was made in Korea !!
#93 of 188 2002 Buick Lesabre Custom blower motor
Mar 21, 2010 (2:48 am)
I had trouble with an intermittent blower motor. When it wasn't working I could either hit the dashboard on the passenger side or kick the panel underneath and the motor would start off slow and then pick up speed. A similar report by ,xfilesalan on 9-25-09, report he took the motor apart and found soot. I removed my motor and notice black soot falling out. There are two screws on the bottom. I removed these screws and pried the motor assembly off about a half inch but not all the way off. The I tapped, rotated and clean as best I could with a can of air. Put the motor back and it now works as it should. Removing the motor is fairly easy. Remove the panel underneath the glovebox
(mine had two screws holding it). With that panel removed you can see the motor. Mine had an air hose which slips onto a pipe. Remove the back screws of the motor first as the front screw will hold the motor in place. Clean the motor as described above. When installing the motor put the rubber hose on first and the front screw, then the back two screws. Took me less than one hour.
#94 of 188 2000 buick lesabre wont turn
Jul 15, 2010 (7:56 am)
#95 of 188 2000 buick lesabre wont turn
Jul 14, 2010 (3:06 am)
2000 Buick lesaber ,3.8Lt ,140,000mi
Hello, I have recently ran into a Problem that just bogels my mind. I drove my car all day mind you, went into a friends house and came back to the car (2000 Buick lesaber) and attempted to start it. It would not even turn over. No selections of the ignition switch would ingauge (key Pos 1,2,3). The lights illuminating the driver and Passenger door window and lock buttons are constantly on (have to unplug the battery) and the horn will stay ingauged if Pushed at all. The radio will turn itself all of the way u or down when battery is plug back in but, no power to it other than the tiny security light(on the head unit not dash). The power seats do move when battery is pluged in.I have no dash lights nothing other than the mentioned above.
WHAT I HAVE DONE:
Checked All grounds I know of.
Checked fuses,fuse box ground studs
Removed ignition switch(Took it apart all contacts and wires are in pristine condition but what I observed was that the vehicle has the same problems with ignition switch removed so could that still be the problem?)
pass key 111 unit is installed factory but, the keys I have do not have chips in them, never have.(also security light it not blinking on dash)
Any and all suggestions and very welcome and thank all of you for taking your time to read and possibly help me out
#96 of 188 Re: 2000 buick lesabre wont turn [mddrj74]
Jul 14, 2010 (6:21 am)
I was tinkering with the vehicle this morning and found out that if I have the ABS box is unpluged. My horn issue seems to go away(It staying inguaged that is).
Also if someone could please tell me where the (PCM) is located. My haynes manual says "under the right side of the dash"
If someone could PLEASE be more specific of where there located I would be very grateful.
(REASON) To check the ground. I was reading something that was saying that a loose ground to the (PCM) would create a problem like that.
If anyone has any suggestions of something I could try anything and thank you again.
#97 of 188 Re: 2000 buick lesabre wont turn [mddrj74]
Jul 15, 2010 (7:56 am)
Can someone PLEASE tell me where to fine the (BCM). Also if anyone has any information on what my buick is going through I would be very grateful.
#98 of 188 THROTTLE BODY
Aug 04, 2010 (7:49 am)
#99 of 188 THROTTLE BODY
Aug 03, 2010 (11:09 pm)
When I had my old 1989 Buick Century, my local mechanic was always careful to clean the throttle body. I've had my 1995 Buick LeSabre with the same V-6 engine for 7 years, and my new mechanic has never cleaned it. It runs good, except I've dropped from 19mpg around town to 13mpg. I wonder if the throttle body needs regular cleaning?