US STOCKS-Wall St higher in cautious trading ahead of Fed
* August retail sales rise
* Fed to meet on Wednesday and Thursday
* All 10 S&P sectors higher; industrials leads
* Fiat Chrysler up as talks with union continues
* Indexes up: Dow 1.07 pct, S&P 0.88 pct, Nasdaq 0.75 pct (Updates to early afternoon)
By Tanya Agrawal
Sept 15 (Reuters) - U.S. stocks extended their gains in cautious trading on Tuesday after data showed retail sales continued to climb in August, strengthening the case for an interest rate increase when the Federal Reserve meets this week.
Analysts said an interest rate hike - the first since 2006 -would remove the uncertainty that has dogged the market for several weeks.
"The debate around the Fed continues but the Fed will do more damage waiting for December to raise rather than start the normalization process," said Art Hogan, chief market strategist at Wunderlich Securities. Continuación...