either the battery or the starter motor is bad but, i dont know how an engine will try to start if it wont turn over maybe you could give more details of what it is doing
It should be the stalk on the left side of the steering column behind the steering wheel
To reset the theft deterrent system on a 1996 Cadillac Fleetwood Brougham, first ensure the vehicle is in the "OFF" position. Insert the key into the ignition and turn it to the "ON" position without starting the engine. Leave it in the "ON" position for about 10 minutes until the security light turns off, then turn the key back to "OFF" and try starting the vehicle. If the system still does not reset, consult the owner's manual or a professional mechanic for further assistance.
probably your ignition coil going bad.
On a 1994 Cadillac Fleetwood Brougham, the turn signal flasher fuse is located in the fuse box under the dashboard on the driver's side. You may need to remove a cover to access the fuses. Look for the fuse labeled for the turn signals or flasher, as the specific labeling can vary. Always refer to the owner's manual for precise information on fuse locations and specifications.
The climate control computer may be defective. Check all fuses. is the defrost cold air?
No
Does it turn over? Does it turn over?
Will turn over but will not start
Turn the ignition to run. On the radio controls, PULL the scan button out to set the hour. Once the the hour is correct, PULL the seek button out to set the minutes.
A lack of fuel is the most common cause for an automobile to turn over but not start. A plugged air filter can also cause the vehicle to turn over but not start.
More information is needed. Does the engine turn over, but not start? Have you checked for gas and spark?
I have a 1978 coupdiville cadillac my blower quit working and there is a relay above your fuse box and if it goes bad your heater wont turn on. I had to replace it with a after market heavy duty relay away from where it is originally plugged in. Also my ground wire connection was dirty and wouldn't turn on until I cleaned the connection so try that and see if it works or you might need to replace the motor.