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Pontiac Bonneville
1992-1999
Bleeding cooling system question

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Bleeding cooling system question

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Mar 12, 2011 | 01:36 PM

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#11

Danthurs

Retired Senior Admin

Expert Gearhead

Joined: May 2006

Posts: 29,661

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From: Sheboygan Wisconsin

If the thermostat is opening, then the system is self burping. It will end up in the radiator. Just remove teh cap, when cold, and look, add fluid if needed.

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