No, savoir does not take the subjunctive:
Je sais que vous avez raison.
I know you're right.
Savoir que is not normally used in negative and interrogative statements; it's far more natural to use si, which means of course* no subjunctive:
Je ne sais pas si vous avez raison.
I don't know if you're right.
Sais-tu s'il a raison ?
Do you know if he's right?
The Subjunctivator! | Quiz: Subjunctive or indicative?
*See my lesson on avoiding the subjunctive
Je sais que vous avez raison.
I know you're right.
Savoir que is not normally used in negative and interrogative statements; it's far more natural to use si, which means of course* no subjunctive:
Je ne sais pas si vous avez raison.
I don't know if you're right.
Sais-tu s'il a raison ?
Do you know if he's right?
The Subjunctivator! | Quiz: Subjunctive or indicative?
*See my lesson on avoiding the subjunctive