Holley EFI GM 4L60/80E Transmission Harness HASZ19DK and 4L85E automatic transmissions with

and 4L85E automatic transmissions with a PRNDL switch

Silverado 2500 HD 2023-2001

#35930/#35940 manifold height: 6

The Little Wizard

Holley EFI GM 4L60/80E Transmission Harness HASZ19DK and 4L85E automatic transmissions withGM 4L60 80E Transmission Harness Complete terminated harness with J4 connector to operate GM electronic transmissions. for Dominator EFI Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Cup Series team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the