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Home » Public Forums » GMCnet » Northstar 97 SLS petcock on radiator help needed! ( NON GMC but I know lots of you have Northstars)
Northstar 97 SLS petcock on radiator help needed! [message #185994] Sun, 30 September 2012 13:22 Go to next message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
I found what seems to be the petcock on the drivers lower tank with an access hole through the core support. I even took down all the rubber air dams and can't see any of the conventional "wings" on the petcock to turn. Tryed grabbing with needle nose and turning but don't want to break. I just want to drain and fill the Dexcool but they sure make it difficult. I can see the lower radiator hose spring clamp but no way to get in there to squeeze the clamp to go that route. HELP!. Is there a special tool needed?

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: Northstar 97 SLS petcock on radiator help needed! [message #186000 is a reply to message #185994] Sun, 30 September 2012 14:46 Go to previous message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
I figured it out. Its the new plastic 90 degree type. I made a tool from a 5" piece of 1/2" pipe and slit the end to turn the wing. Man.

John Lebetski
Woodstock, IL
77 Eleganza II

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