I have a similar problem on a 92 LeSabre, which I have yet to fix, since my daughter drives the car. In the short term we found that releasing and stepping on brake pedal several times may do the trick in the short term.
From looking in a few manuals as well as a brief discussion with a couple of repair shops I called for estimates, it could be a problem with the switch at the brake pedal either being improperly adjusted or a switch failure, or a problem with the shift interlock solenoid in the steering column. This switch powers a solenoid in the column to allow the shift lever to be moved out of park. It appears from schematics that one could test the solenoid by hooking a +12 V jumper (a long piece of wire from your local hardware hooked to the +terminal on your battery) directly to the dark green/white striped lead off the brake switch (the one switch that does not have the large vacuum hose to it, but does have a total of six wires associated with it). If, when the jumper is hooked up, and the ignition is turned to on, one can shift out of park, then the solenoid should be working 'Ok' and either the switch needs adjustment or replacement. Adjustment instructions can be found on various web sites or in a Chiltons manual at your local library, although it looks like one simply pushes the switch in as far as possible, then pulls up on the brake pedal until it stops moving or the switch stops clicking, and the brake lights stay off when the brake pedal is released. Also check that the brake lights go on when the pedal is depressed.
Estimates for repair ranged from about $30 for a switch related problem to about $150 if the solenoid needed repair (about $70 labor and about $70 for a replacement solenoid). So it can't be too hard to take the solenoid out and repair/replace the solenoid as $70 labor is only an hour or so of labor costs. Again, instructions can be found in various places on the web.
If you want to try it yourself, you need to remove the lower plastic shield on the dash, just above the pedals. The solenoid itself isn't in the steering column, but visible from under the dash on the left side (drivers left)between the column and the parking brake. It has a bright grey, almost galvanized finish on it. If you put the keys in, and turn the ignition to "on", then push on the brake pedal, you should be able to see the linkage move and hear the solenoid. The moving part of the linkage is mounted to the solenoid bracket with a 10 mm nut. You can also turn the ignition key to "on", then manually move the linkage at the solenoid to see if the shifter releases. The solenoid has a resistance of about 14 ohms when measured with an ohmmeter. You can use a jumper as mentioned above to put +12 Volts on the solenoid by running a wire from the upper (or "electrically hot") part of fuse 15 (which is the courtesy lights fuse)to the dark-green with a white stripe wire on the 4 wire connector that goes to the brake switch that does not have the vacuum hose on it. When 12 volts are applied you should be able to see the solenoid move and hear it too. The shifter won't release unless the ignition key is also in the "on" position.
Ford Explorer Column Shifter Lever Bracket Repair
A person can get an exploded diagram of the steering column shifter for this car in its maintenance manual. It can also be found in the repair manual.
it's got a shift interlock.check brake lights if they work check interlock switch
The cheapest and easiest would probably to install a floor shifter. If you don't want to do that, you would have to almost completely dismantle the steering column.
You can repair the tilt steering column, on your 1990 Ford F1 50 pickup truck, by removing the steering column. Purchase a steering column repair kit. Install the steering column repair kit.
You take off the brakes and repair the interlock shock by buying a new one DDDDDDDDDDDDuhhh
Possibly the brake light switch is bad. I had a recall on a Ford Taurus that spoke of this problem. The brake light switch releases a solenoid that holds the shifter in park.
Check www.autozone.com, they have a Repair Info section that covers Buick LeSabre with this info.
Remove the shifter knob. Remove the shifting linkage. Remove the shifter retaining bolt. Reverse the process to install the new shifter.
HAYNES REPAIR MANUAL!
To repair a seat heater on a 2004 Buick LeSabre, disconnect the connector and check for voltage. If there is no voltage, replace the switch. If there is voltage, check for an open circuit.
A spring retainer in the shifter breaks. The dealer has a repair package, and some are under a recall.A spring retainer in the shifter breaks. The dealer has a repair package, and some are under a recall.
shifter bushing has been worn out. should be able to repair under the car.maybe Civic Shifter Bushing Kit-Energy Susp #16-1101r
The steering column on a vehicle can be replaced. A repair book for the vehicle make and model instructs how to repair the issue. This is considered a minor repair but if a person has no experience fixing a steering column, it may be best to have the job done by a professional.
How to repair brake lines on a 91 buick
www.autozone.com has this info in their Repair Info section.
95% of GM autos with no reverse will need to repair the transmission 95% of GM autos with no reverse will need to repair the transmission
Make sure Stop lights are working--interlock is same circuit
replace the combination switch on the turn signal stalk
Check the fuse on the kick panel 25amp fuse
You cannot "fix" it. But you can replace it in about an hour.
Most shifters are held in with retaining clips that you access through the top, around the shifter shaft.
If the column has no key cylinder, just like any other column. If the key is lost/missing re-building the column will replace the cylinder.
I take it you mean that the shifter is loose and is too sloppy to properly find reverse or drive. To fix this, lie on your back under the dash - there is a gold colored triangular plate with two bolts in it. If you wiggle the shifter you will see it move. You may not have the right bit for them, but you can use an Allen key in a pinch. tighten these two bolts and you're done!
The socket size for the trunk tail light on a 2001 Buick LeSabre is 7mm. Bulbs can be purchased at most local automotive repair stores.