Contour Enthusiasts Group Archives Forums General Troubleshooting EGR Valve Removal problem

I have a 95 contour SE and am getting a code that the egr valve is not openning. Looked up hot to remove it in the haynes manual which does not tell me wich tools i need. I can remove every thing but the but the connector on the bottom. I think it requirs a 25 or 26 mm wrench but im not shure. Unless it comes off someother way it looks like I need to buy another tool. Can someone please tell me what I need to get to get that valve off.