I need to travel BY LAND to Canada. All that I have is my pernament resident card and US drivers liscence?

Is this enough to re enter the Us border without a passport ?

It is a good idea to take along a few other documents, such as the most recent bank account statement, utility bill and employer ID or recent pay stub and the most recent US and State income tax returns.

Make sure your Green Card has not expired and get a reentry permit before you leave.

Yes.

As long as you have your P.R. card, a valid state ID thats fine, I would bring a non-expired passport