Maybe it will be this engine
http://biz.yahoo.com/rb/060312/autos...rope.html?.v=1
GLOBAL DIESEL OFFENSIVE.
Separately, the trade publication also reported that GM is planning a global diesel offensive starting in 2008 that would include launching new diesel engines in the United States, where the technology has found few fans compared to Europe.
"We are developing right now two highly modern diesel motors that won't just fulfil the Euro-5 emission standards, but (also) the more stringent Bin-5 regulations in the USA," an unidentified GM manager told Automobilwoche.
It plans to introduce a 2.9 liter V6 and a 4.5 liter V8 that will gradually be used in almost all sport utility vehicles, pick-ups and large sedans in all GM brands and all markets.