Brute Force Bench Flasher & Harnesses - Ewalt's Auto Tuning › Engine Module Bench Harness 99-09 GM P01 P04 P08 P59 3.1L 3.4L 3.8L 4.3L 5.0L 5.3L 5.7L 6.0L 7.4L 8.1L Image 1 of 1 Engine Module Bench Harness 99-09 GM P01 P04 P08 P59 3.1L 3.4L 3.8L 4.3L 5.0L 5.3L 5.7L 6.0L 7.4L 8.1L $75.00 Engine Module Bench Harness for 99-09 GM models P01, P04, P08, and P59 is designed for use with Brute Force Bench Tuning. Quantity: Purchase Added! Engine Module Bench Harness for 99-09 GM models P01, P04, P08, and P59 is designed for use with Brute Force Bench Tuning. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More