Top 10 1997 Buick LeSabre Questions & Answers

Possible ground wire fault with dash board unit. If it is a cable operated spedo, the cable end (small square cap) may be rounding off on one end.

It is very likely the part that is giving you the problem is a Crankshaft Position Sensor, they go open circuit when they get hot, then after it cools it becomes a good circuit again, this is very frustrating, had the same issue with my Buick a few years ago, replaced the coils and the ignition module at a cost of hundreds, DID NOT CHANGE A THING, the crank sensor fixed the problem and was $30.00 from Buick.

If you are looking at the engine, on the left (passenger side) will be the belt. The alternator should be at the top of the belts route. directly below the alt is the tensioner/pulley (small) Below and to the rear of the vehicle is the power steering pump. The resevoir is attached to the pump. If you reach/look over the engine and feel below the heater hoses you will see the p/s pump resevoir cap(kinda hard to see/feel)

I have exactly the same problem with the same car. Previous owners garaged it and barely drove it. Now that it's parked in my driveway in the rainy Northwest, problem is a lot of rainwater pooling in the rear foot area, drivers side only.
No moisture at all on the passenger side, front or back. And none in the driver's feet area. Just the back seat, driver's side. No antifreeze smell, etc. And this is a problem when the car is parked; it's not water coming in from underneath or rainwater being driven into the car through gaps while driving.
I found two cracks in a part that I believe is called the "eavestrough." It's a single black plastic piece of molding that is screwed against the body over both doors. This seems to be a common problem -- I went to a local junkyard, found the same make, model and year of car and the plastic molding was cracked in exactly the same two places as on my car. Even with all the screws snugged, it's still a pretty loose fit, with gaps that could easily let water drip down.
After pulling off several pieces of molding and trying to figure out what's going on, here's my suspicion: Water is dripping through the eavestrough and, on the outside of the car, down the column between the two doors.
Normally this would not be a problem. But I noticed that there was a little gap between the car body and the strip of rubber molding that runs on the car body underneath both doors. When I removed this molding (it's screwed on and very easy to remove and reinstall with a 7mm nutdriver), I found that water was getting underneath the molding.
But here's the really odd thing: In addition to the screwholes for the screws holding that bottom molding on, there are three larger holes drilled into the car body underneath that molding. It was apparently made that way (the holes are painted). I'm completely mystified why Buick would leave holes in the outside of a car body like that. They're clearly not drain holes.
My best guess is that that's where the water is getting in. It runs down the pillar between the doors, pools on the rubber gasket/molding beneath the door, and then drips right into the car body through one or more of those holes. The area behind the driver's seat just happens to be the closest, lowest point in the car, so the water pools there.
Today, I sealed everything with a good, clear silicone sealer. Sealed all the gaps in the eavestrough, plugged those three exterior holes under the molding, and added a bead of sealer to the gasket below the door. For good measure, also put a squirt of silicone in every screw hole before reinstalling. I wet-vacced the carpet, which I'm trying to dry as quickly as possible.
If this doesn't work, I'll post more about next steps.

your horn relay is located under the hood in the black box that also houses the fuses and relays for your whole car .. under the lid for this black box is the location for all the relays and fuses check it out and see if it has your horn relay in there thanks and holler if you need more. Jerry

Sounds like it's your IAC (idel air control sensor).  The IAC is a computer-controlled air bypass valve located in the throttle body. It helps control idle speeds by allowing air to bypass the throttle plates as to increase the idle speed.  If the IAC isn't working properly the car will stall when you are not pressing the gas pedal.  It is located on your throttle body and is relatively cheap and a simple change since it is normally held in my two screws.  Let me know if you have any other questions.  Thanks for an honest ranking and for using FixYa!

There are 2 relays for the blower. The low blower relay and the high blower relay. They are both located
under the hood in the center of the firewall.
The low will have 4 wires from it, one lt. blue and 3 brown. The high will have 5 wires 1 purple(to blower mtr.) 1 black 1 dk blue 1 red and 1 orange.
Also, the blower resistor is in the same area if needed. Hope this helps.

All depends on how much you took out - or how long the vehicle was sitting (allowing time for the torque converter to drain more fluid into the pan)

Typically, 4 quarts is about average for a filter change. Your transmission holds much more than that(up to 11 quarts), but the rest is in the torque Converter.

I would start with 3 quarts first - then start engine, and check your level. If you see nothing on the stick, turn the engine off right away - and put 2 more in. Same procedure.

Just remember to keep the vehicle on level ground when filling and checking the level with the vehicle running and in park.

Once it shows on the full line, cycle the transmission selector through all gears(no need to move the vehicle). Check your level again after that to ensure the proper level.

Good Luck

Tensioner is rotated clockwise to release tension.

The security light is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM. These 3 parts are in CONSTANT communication. If the key is in the ignition, these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. There is where the security light turns on and shuts down your vehicle.
http://vatspasslockpasskeysecurityhelp.yolasite.com/