| WTWarren Technical Center | Warren | MI | Transportation Equipment Manufacturing336310 | 500+ | ◐ LIKELY ACTIVE |
| WWelding | Warren | MI | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| ARAbruzzi Racing Transmissions, INC. | Warren | OH | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| DADelphi Automotive Systems LLC | Warren | OH | Primary Metal Manufacturing331422 | — | ◇ UNVERIFIED |
| DPDelphi Packard Electric Systems | Warren | OH | Transportation Equipment Manufacturing336322 | — | ◇ UNVERIFIED |
| DPDesign Photographic Studio | Warren | MI | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| FTFuturamic Tool | Warren | MI | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| GMGeneral Motors CO. West Plant | Warren | OH | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| GMGeneral Motors LLC | Warren | MI | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| GLGm Lordstown | Warren | OH | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| GTGm Technical Service Ctr Main Mfg | Warren | MI | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| GWGm Warren Tech Ctr | Warren | MI | Transportation Equipment Manufacturing336330 | — | ◇ UNVERIFIED |
| IIIroquois Industries INC | Warren | MI | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| IIIroquois Industries INC | Warren | MI | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| OTOn the Road Trailers INC. | Warren | ME | Transportation Equipment Manufacturing336999 | — | ◇ UNVERIFIED |
| RIRadar Industries INC Warren Plt 12 | Warren | MI | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| SIShiloh Industries | Warren | MI | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| SASmw Automotive | Warren | MI | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| VLVacant Land | Warren | MI | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |