The 40-day labor strike made a big dent in GM's bottom line.
The automaker said the walkout that virtually halted all North American operations would cost it around $3 billion in profits this year.
As a result, General Motors is slashing its earnings forecast for the full year.
Last Friday, union members made peace, ratifying a new four-year labor deal that wrung higher pay and other benefits from GM.
The automaker's CFO described the strike as a "one-time impact." GM shares rose sharply Tuesday.
Investors applauded the company's robust 6% sales gain in the United States.
Its highly profitable pick-up trucks, sport utilities and crossovers drove the top line higher.
Profit fell, but it STILL crushed analysts' expectations.