Duramax standalone harnesses.
The typical Duramax harness has hundreds of individual wires and each has a specific place in the harness. Rely on our knowledge and experience instead.
- LB7
- LLY
- LBZ
- LMM
- Van
- Topkick/Kodiak
What a standalone harness is and what it is not
YouTube- MODIFY AND REFRESH YOUR EXISTING CORE HARNESS$576Standalone conversionSend your LB7, LLY, LBZ or LMM harness in. It’s converted to standalone and comes back refreshed. Upper engine harness refresh +$500.Convert and refresh your existing harness
- ALL NEW ONE PIECENew100% new LBZ or LMM harness No core required.Built new in our shop: LBZ 2006–2007 · LMM 2007.5–2010. For pickup truck engines only. Vans and C4500 require custom order. Contact before ordering.Shop new harnesses
- FAQ35Answers from KenEvery question Ken gets asked about Duramax swaps, answered, plus short FAQ videos.Read the FAQ
- TROUBLESHOOTINGOBDStarting or driveability issues?Send Ken your scanner fault codes and live data with his diagnostic form.Open the diagnostic form