ChopperBill
Well-known member
The darn hydro-vac has been leaking on the GMC for quite awhile but I thought it was just the hose. Only 65,0000 miles. I would bet it had been leaking while I was still in warranty. Had to have a new one installed as they don't make a seal kit for it! $800!!!! and they gave me a $175 off! But get this. They just put one on that day on another truck and the service manager just had one put on his pickup. It is a part they keep in stock. Something must be screwy if they are putting that many on of such a rare problematic part. You GM guys might check yours by just putting your had under it and see if there is any oil leaking.