2005 SLE Plugging LIM TB coolant passages : Performance & Brainstorming

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2005 SLE Plugging LIM TB coolant passages

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rynmcdonald

Post subject: 2005 SLE Plugging LIM TB coolant passages

Posted: Tue Mar 11, 2025 12:09 am

Posts like an LG3

Joined: Mon Feb 11, 2013 5:55 am
Posts: 337
Year and Trim: 2003 Bonneville SSEi.

I had did this many years ago to my 2003 SSEi on the lower intake manifold but don't remember where to get parts and what tools are needed. Like a drill.... taps, etc. I do know that they're made made of brass.

Are these plugs threaded or are they like a freeze plug that you tap in?

All help is appreciated. Thank you

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95naSTA

Post subject: Re: 2005 SLE Plugging LIM TB coolant passages

Posted: Tue Mar 11, 2025 10:25 pm

Certified Bonneville Nut

Joined: Wed May 21, 2008 11:47 pm
Posts: 7020
Location: Philadelphia
Year and Trim: 95 SLE

People generally use 1/4" NPT pipe plugs. The are charts for what drill bit to use and a regular tap works.

I popped the coolant bypass cover off under the EGR and removed some material on the shelf there to compensate for removing the TB circuit. Who knows if it really mattered but it was free and felt right.

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