General Motors (NYSE: GM) will report its third-quarter earnings before the bell on Tuesday, Oct. 25. Here's a look at what to expect -- and what to watch for in the General's report.Analysts polled by Thomson Reuters expect GM to report earnings of $1.44 per share, on average. That's down a bit from the $1.50 per share that GM earned in the third quarter of 2015, reflecting somewhat softer overall U.S.