GM Gen IV LS Series E40 ECM Bench Harness – E60 Duramax E22 P05 P07 P11 P12

This is a remanufactured bench harness from BenchForce, built for tuning GM ECUs.

It works with Gen IV LS-series E40 computers, as well as E60 Duramax, E22, P05, P07, P11, and P12 modules.

It's been completely gone through and rebuilt to function like new—ideal for bench flashing, diagnostics, or testing.

If you're a tuner or hobbyist working on GM engines, this harness lets you power up and communicate with the ECM right on your workbench.