Trailblazer/Envoy/Saab 5.3L/6.0L Electric Fan 3 HD Relay Kit (No Fans)

This kit features three heavy duty relays. This harness will bring both fans on at half speed for low, and both fans on at full speed for high. Fits 5.3L and 6.0L Trailblazers/Envoy/GMT360. Fans sold separately. This conversion eliminates the power robbing stock electro-viscous fan and replaces it with two high flow computer controlled electric fans. This conversion has been credited with gains ranging from 12-18 RWHP and fuel economy improvements of around 1 MPG.

The purchase of this kit includes a voucher for a FREE software fan patch – required to control the fans by computer.

This kit includes the wiring harness, hardware, and brackets.