new battery new alt will no how charge
there has to be a solid 1/0 battery cable to the engine block...this alternator is grounded through this block...as I recall there is a stud with a lug exiting the alternator...have someone test the output of the alternator there...it should be a regulated 14.5-15.5 volts DC...the motor has to be turnin~
else, slap on ye olde shumbacher...yes every garage has one kickin' about...think I'm on my third one now~
Turn on the key, do you have an alternator light on? If not check that circuit, alternator will not activate without that light.
Everything check good
Looking for a Used DeVille in your area?
CarGurus has 1,422 nationwide DeVille listings starting at $1,988.
Search Cadillac DeVille Questions
Cadillac DeVille Experts