April 30 (Reuters) - GM :
* Announces $5.4 billion in U.S. plant investments
* Says $783.5 million identified for three Michigan facilities
* Says to invest $520 million for tooling and equipment for future new vehicle programs at Lansing Delta township assembly plant
* Says to invest $139.5 million for a new body shop and stampingfacility upgrades at pre-production operations in warren
* Says will detail the remaining $4.6 billion and identify plants involved over next several months Source text: http://bit.ly/1I0PDny Further company coverage: