Transmission Control Harness;
Expanding on our Transmission Control options from Holley EFI. This new harness 558-455 from Holley EFI provides plug and play transmission control for the 2009+ GM 4L60 when used with a Dominator ECU. The 2009+ GM 4L60E contains an internal turbine speed sensor, which was not on the previous model year transmissions. Additionally, the valve body range selector is wired and controlled differently from the ECU.
- Built In Relay - Must Be Wired To A Switched 12V Source
- Plug And Play With 2009+ GM 4L60E Transmissions
Application Summary:
| Year |
Make/Model |
| 2007-2008 |
Chevrolet Avalanche |
| 2009-2012 |
Chevrolet Colorado |
| 2009-2014 |
Chevrolet Express 1500 |
| 2009 |
Chevrolet Express 2500 |
| 2009 |
Chevrolet Express 3500 |
| 2006-2013 |
Chevrolet Silverado 1500 |
| 2007-2008 |
Chevrolet Suburban 1500 |
| 2009 |
Chevrolet Tahoe |
| 2006-2009 |
Chevrolet Trailblazer |
| 2009-2012 |
GMC Canyon |
| 2009 |
GMC Envoy |
| 2009-2014 |
GMC Savana 1500 |
| 2009 |
GMC Savana 2500 |
| 2009 |
GMC Savana 3500 |
| 2006-2013 |
GMC Sierra 1500 |
| 2007 |
GMC Sierra 1500 Classic |
| 2009 |
GMC Yukon |
| 2007-2008 |
GMC Yukon XL 1500 |
| 2009-2010 |
Hummer H3 |
| 2009-2010 |
Hummer H3T |
| 2008-2009 |
Saab 9-7x |
