Holley EFI Transmission Control Harness - GM 4L60 (Pre-2009) and 4L80 All The Reflect uses RIGIDs patented

The Reflect uses RIGIDs patented LED technology and Side-Shooter optics to provide a wide beam of light for cornering and drifting

2020 GMC Sierra 3500 HD Denali Gas Crew Cab Pickup

Rear springs The factory springs are swapped out in favor of a full replacement Glideride leaf pack designed for great on/off-road performance

and a 12 percent thicker core area with a major increase in volume

particularly big cams that tend to reduce low-end power and torque

Holley EFI Transmission Control Harness - GM 4L60 (Pre-2009) and 4L80 All The Reflect uses RIGIDs patentedExpanding our transmission control options for our EFI systems, this harness provides plug and play for Pre 2009 GM 4L60 and 4L80 transmissions using a Dominator. This also contains a J4 connector to operate GM electronic transmissions.