Holley EFI 558-405 GM 4L60/80E Transmission Harness (Pre '09)
GM 4L60/80E Transmission Harness - For 1996-2008 Transmissions only.
GM 4L60/80E Transmission Harness - Complete terminated harness with j4 connector to operate GM electronic transmissions. For 2009+ GM 4L60/80E Transmission use Holley EFI Part Number 558-455.