Top 10 1999 Buick LeSabre Questions & Answers

Fuel Filter Removal & Installation To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Relieve the fuel system pressure.
4. Raise and support the vehicle.
5. Disconnect the plastic quick connect from the fuel filter inlet.
6. Unthread the fuel filter from the outlet pipe.
7. Drain remaining fuel into a gasoline container

To Install:

1. Remove the new fuel filter protective caps.
2. In the same position as on the old fuel filter, install the new plastic connector retainer on the fuel filter inlet.
3. With clean engine oil lubricate the new fuel pipe O-ring and install it on the outlet pipe.
4. Connect the fuel filter inlet to the quick connect fitting.
5. Thread the fuel filter into the fuel outlet line, and using a back-up wrench prevent the nut from turning torque to 22 ft-lb (30 Nm).
6. Lower the vehicle.
7. Install or tighten the fuel cap.
8. Connect the negative battery cable.
9. Check for leaks using the following procedure:
   1. Turn ON the ignition for 2 seconds.
   2. Then OFF the ignition for 10 seconds.
   3. Turn ON the ignition.
   4. Inspect for fuel leaks.
10. Install the fuel injection sight shield.

Your vehicle's fuel pump relay is located on the relay center, behind the glove box, 2nd column of relays, 2nd one from the top.

Hello sthomasbf
This sounds like it may be a problem with the passII security sys.
First check the two fuses in the fuse block, #1A and #2E the block is
located under the left side of dash. They may be marked as vehicle anti
theft system(vats)#1A. Fuse #2E may be marked vats/air bags.If these
are good, locate the anti theft relay located above the fuse block.
There will be a yellow wire and a purple wire on each side of the relay,
you wan't to jump the yel wire(A2) to the ppl wire(C1) one of the yellow
wires will run from the relay back up the steering colum. This wire is C1
the ppl wire on the other side of the relay is A2 jump these two wires
and this will bypass the relay. If the car still won't start the problem is
most likely in the colum, either the chip in the key or the resistor in
the ign. lock. You can start the car by locating the purple wire under
the hood in the harness with the blk plastic cover, that runs accross the
firewall. In the same bundle of wires there should be a slightly thicker
red wire, with the key in the on pos. take a sharp knife and cut into
the 2 wires at the same time to make a connection. This will turn the
starter and start the car. If you need to take it to get the key and lock
checked. Hope this helps.

1994-99 BUICK LESABRE
CHANGE OIL SOON Light
1. CHANGE OIL SOON light will come on when engine oil has broken down enough to require changing. After changing oil, reset oil life display.
2. To reset light, turn ignition on. Open glove box to access oil reset button. Press and hold oil reset button in glove box for at least 5 seconds, but not longer
than 60 seconds. The CHANGE OIL SOON light will flash 4 times to indicate light has been reset.

FUSE BOX LOCATIONS DRIVER AND PASSENGER SIDES

The driver's side fuse block is to the left of the steering

wheel, under the instrument panel.

Snap off the cover to reveal the fuses. You'll find a fuse

puller clipped to the inside of the cover. Place the wide

end of the fuse puller over the plastic end of the fuse.
Squeeze the ends over the fuse and pull it out.

Passenger's Side Fuse Block

Additional fuses are located in the relay center, on the

passenger's side, below the instrument panel. You must

remove the sound insulator on the right side of the

passenger footwell to replace these fuses.

Since the replacement of these fuses can be difficult,

we recommend that you see your dealer for
fuse replacement.

The thermostat is used to control the flow of engine coolant. When the engine is cold, the thermostat is closed to prevent coolant from circulating through the engine. As the engine begins to warm up, the thermostat opens to allow the coolant to flow through the radiator and cool the engine to its normal operating temperature. Fuel economy and engine durability is increased when operated at normal operating temperature.


REMOVAL & INSTALLATION
CAUTION Never open, service or drain the radiator or cooling system when hot; the system is under pressure and will release scalding hot coolant and steam which can cause severe burns and other bodily harm. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

1. If necessary, unfasten the retainer and remove the upper engine cover.
2. Disconnect the negative battery cable.
3. Remove the air cleaner and duct assembly.
4. Partially drain the engine cooling system, into a suitable container, to a level below the thermostat.
5. Disconnect the upper radiator hose from the water outlet.

1. If necessary, detach the electrical connections from the throttle body assembly.
2. Unfasten the water outlet attaching bolts, then remove the water outlet.

1. Remove the thermostat. Remove and discard the gasket.

1. Thoroughly clean the manifold water inlet and water outlet mating surfaces. Inspect the water outlet for corrosion or other damage, and replace if necessary.

Fig. 8: Exploded view of the thermostat and housing assembly - 3.8L (VIN C) engine

Fig. 9: Thermostat and water outlet mounting - 3.8L (VIN L) engine shown

Fig. 10: Exploded view of the thermostat, gasket and housing assembly - 1997 vehicle shown

To install:

1. Position the thermostat into the intake manifold with a new gasket.
2. Install the water outlet to the intake manifold with RTV sealer. Tighten the attaching bolts to 20 ft. lbs. (27 Nm).
3. Connect the radiator hose to the water outlet housing.
4. If necessary, attach the electrical connections to the throttle body assembly.
5. Install the air cleaner assembly, then connect the negative battery cable.
6. Refill the engine with the specified type and amount of engine coolant. Start the engine and check for coolant leaks.

I hope this helps; remember to rate this post. Good luck.

It's when the security light starts flashing that the infamous "chip" in the key becomes a nightmare to many. Gradually the car begins not cranking anymore or if it cranks it would start and die in a second. Randomly it will do this more and more often until it won't start anymore. VATS, PASSkey and Passlock immobilizer systems are killing cars all over North America, they have a short lifespan and are certainly more effective against owners than thieves. Here is how you save your car
1st trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year. If its shutting down while running, im sorry i have no quick fix... If anything on this page helps you, please remember to comment or give me a thumbs up on the myfixya sight so i can have a better rating to help more people on this. You can also Chat with me now as i have moved up in the myfixya world. Thanks

Cheap fix: Bypass the chip in your key. Temporary, but effective. Until the TDM (theft deterrent module) in the dash poops out, then you're kinda screwed. I was told that these types of key security systems have a 7-10 year life span. Sucks for us. This link explains the "Key Issue" pretty well.
----- http://vats.likeabigdog.com/


Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. They sell a unit for 200 bucks to totally bypass this system FOREVER. life time-money back and all that. Finally did this in my car. Well worth the 200 if you've looked into getting this replaced... Anywhere from 600-1000 bucks. If you do buy this, please purchase it thru this link. The cost is the same, but i get credit for the sale and im trying to earn my money back, as you will be able to do if you buy fron NewRockies and join the free affiliate program. Thanks
----- http://newrockies.ca?ap_id=judd0081
----- With this fix, you can take that whole Vats, passlock, passkey **** system out of your car all together. Good info on both sites.

It works for:
Any GM or Isuzu Vehicle with VATS or PASSKey or PASSLock security systems.
If your car has the chip in the key or in the lock cylinder, then you can save it with this Full Bypass.
Trucks
.
GMC/Chevy
1998-2006 S10/T10/Sonoma
/Blazer/Jimmy
1998-2007 Suburban/Avalanche
/Tahoe/Yukon
1998-2006 Sierra/Silverado
2002-2008 Trailblazer
2003-2006 SSR
1998-2006 C1500/C2500/C3500
1998-2006 K1500/K2500/K3500
2003-2007 Hummer H2
.
Isuzu
1998-2000 Hombre
2005-2006 I280/I350
2007-2008 I290/I370
.
Cars/Vans
.
Isuzu
2003-2007 Ascender
.
Pontiac
1994-2003 Grand Prix
1998-1999 Montana
2006 Torrent
1996-2005 Grand AM
1994-1998 Trans Sports
1988-1999 Bonneville
1988-2002 Firebird
1995-2005 Sunfire
1996-2002 Trans Am
.
Buick
2004-2007 Rainier
1994-2005 Century
1993-2004 Regal
1982-1999 LeSabre
1991-1996 Park Avenue / Ultra
1994-1996 Roadmaster
1991-1996 Roadmaster Estate Wagon
1982-1999 Riviera
1988-1991 Reatta
1996-1998 Skylark
1982-1990 Electra (all models)
.
Oldsmobile
1996-1998 Achieva
1999-2004 Alero
1994-2004 Aurora
1998-2004 Bravada
1991-1993 Delta 88
1994-1999 Eighty-Eight
1991-1996 Nighty-Eight
1998-2002 Intrigue
1990-1992 Toronado
1994-1997 Cutlass Supreme
1997-1999 Cutlass
1997-1999 LSS/Regency
1997-1999 Silhouette
1991-1996 Custom Cruiser
.
Chevrolet/GMC
1998-2005 Astro/Safari
1998-2008 Envoy
2005-2006 Equinox
1998-2007 Savana/Express
1995-2005 Monte Carlo
1997-1999 Venture
1995-2001 Lumina
1988-2002 Camaro
1995-2005 Cavalier
1982-2004 Corvette
1994-1996 Caprice/Caprice Wagon
1995-1996 Impala SS
2000-2005 Impala
1997-2005 Malibu Classic
1997-2003 Malibu
.
Cadillac
1986-1993 Allante
1982-1996 Fleetwood
1985-1996 Fleetwood Brougham
1992-2004 Seville
1992-2004 SLS/STS
1985-1999 Deville
1994-1999 Deville Concours
1997-1999 Deville D'Elegance
1988-2002 ElDorado
1994-2002 ElDorado Touring
1999-2007 Escalade
.
Saturn
2000 LS/LS1/LS2/LW1/LW2
2001-2002 L100/LW100
2001-2003 L200/LW200
2001-2005 L300/LW300
2004-2005 L-Series
2002-2008 VUE
1996-2002 SL/SL1/SL2
1996-2002 SC1/SC2
1996-2002 SW1/SW2

• Remove the passenger hush panel under the dash. Recline the seat way back and lay backwards and look way up under the dash. Use a flashlight to make this a bit easier too. Here is your diagram.
  

• Hope this helps.

yes u can open it and reach inside the glove box there should be a place on each side u will see a plastic or cloth line that holds it in place so it deosnt fall out to far ,, it should pop off and allow it to fall out further so u can reach behind it . I hope this helps if not let me know here [email protected] and i promise i will figure it out for u :)

Ive worked on so many different vvehicles, check near the tank, under the driver door and check below brake power booster. If not, follow fuel line.