March 17, 2021

6L80 Series Pressure Regulator Valve Repairs: Pump Drilling Explained

Presented by Sonnax

The best way to address GM 6L45, 6L50, 6L80, 6L90 pressure regulator valve problems is by replacing a wear-prone OE valve with an improved Sonnax drop-in Zip Valve or oversized part. Installation does require drilling a small hole in the pump, though, to prevent excessive line pressure. Learn more about why drilling is necessary and watch the simple, step-by-step process in this quick video.

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