How to Fix a Glacier Bay One-Piece Dual Flush Toilet (Running or Ghost Flushing)

If you own a Glacier Bay one-piece dual flush toilet and it won’t stop running — or worse — it randomly turns itself on in the middle of the night, you’re not alone. These models commonly experience two issues:

  1. Fill valve set too high, causing overflow
  2. Worn or faulty flush valve assembly, leading to ghost-flush cycles

In this guide, I’ll walk you through diagnosing and repairing both problems step-by-step. This is the same process shown in my YouTube video below.

👉 Watch the full repair video on YouTube:
Glacier Bay Dual Flush Toilet Repair – Running & Random Refill Fix