Either the battery has a dead cell and needs replacing or something is pulling power from the battery when the engine is off.
I had a problem with my 1986 Cadillac DeVille where the power antenna was stuck and the motor would run all night trying to lower the antenna. To resolve the problem I just removed the fuse for the power antenna motor.
Isn't one
The power of the engine in the 1976 Cadillac Seville automatic is 190 @ 3600 rpm. The maximum speed is 110 mph.
8 cylinder 180 hp
Left front of motor in manifold.
All 1976-1979 Cadillac Sevilles were rear wheel drive. Front wheel drive wasn't used on these cars.
Raquel Morillas was born on December 7, 1976, in Seville, Seville, Andaluca, Spain.
I would check to see if the fuel pump is working. Fuel pump is located on the drivers side rear on the frame near the gas tank behind wheel.
Can you please direct me to were I can get a vacuum diagram for a 1996 Seville
For 1976 ONLY, Cadillac Seville's bolt pattern was 5x4.75 (5x120.65mm in metric). NOTE: Many, even those who sell wheels professionally, often confused a 5x120mm bolt pattern wheel as being the correct size for the 5x4.75 bolt patters, be careful if looking to buy new metric sized wheels, as the .65mm makes ALL the difference in it fitting.
1976 cadillac fleetwood 75
In the ECM under center of dash.
A battery that runs down overnight is normally caused by a dead cell in that battery. The only fix is to replace the battery. It can also be caused by any light that is left on, on the vehicle. Dome light, under hood light, trunk light, glovebox light, or even brake lights that our on due to a sticking brake light switch. A relay that is sticking can also cause this. Disconnect the negative battery cable and let the vehicle sit overnight. If the battery is still charged the next morning then you know the battery is good. If the battery is dead then you know the battery has a dead cell and must be replaced.