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. Get notified by email when this product is in stock. 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