General Motors owns only automotive brands .
These have included Euclid and Terex -LRB- earthmoving/construction/mining equipment & vehicles -RRB- ; Electro-Motive Diesel -LRB- locomotive , marine , and industrial diesel engines -RRB- ; Detroit Diesel -LRB- automotive and industrial diesel engines -RRB- ; Allison -LRB- Aircraft engines , transmissions , gas turbine engines -RRB- ; Frigidaire -LRB- Appliances including refrigeration and air conditioning -RRB- ; New Departure -LRB- bearings -RRB- ; Delco Electronics and ACDelco -LRB- electrical and electronic components -RRB- ; GMAC -LRB- finance -RRB- ; General Aviation and North American Aviation -LRB- airplanes -RRB- ; GM Defense -LRB- military vehicles -RRB- ; and Electronic Data Systems -LRB- information technology -RRB- .