Overview Reviews Product Description 558-429 Holley EFI Dominator EFI GM Drive-By-Wire Harness - Early Truck Dominator EFI GM DBW Harness-Early Truck Product Videos Custom Field Product Reviews Write a Review Write a Review × 558-429 Holley EFI Dominator EFI GM Drive-By-Wire Harness - Early Truck Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *