changing thermostat - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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.

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Old 05-23-2005, 06:09 PM   #1
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Default changing thermostat

well, Ive tried to remove the bolts off the thermostat housing for 2 days now with no luck, anyone have suggestions that have been sucessful?
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Old 05-23-2005, 06:27 PM   #2
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The 2 10mm bolts to the side of the goose neck?
Try an impact socket or tap on the bolt head with a hammer while applying even preasure with a wrench.
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Old 05-23-2005, 06:37 PM   #3
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i didnt think about tapping on them w/ a hammer, thanks. My last resort may be an impact, but whatever I do im trying not to break them off in the housing, that would be bad.

After 145K these SOB'* dont wanna come out :(
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Old 05-23-2005, 07:28 PM   #4
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201K and mine spun right out....hrmmmmm....what al have you tried?

And yes breaking them off would prolly buy you a new LIM....But then you got the bolts out???
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Old 05-23-2005, 07:56 PM   #5
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lol, elbow grease, 10mm socket and WD40 ive tried so far. I just have terrible luck
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Old 05-23-2005, 08:00 PM   #6
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Do what Pdad said to try...Also try taking a flat screw driver and a hammer and tapping the sides of the bolt heads....maybe pretty corroded in there...

This next idea can hurt, but let the car warm up idling.....for about 20 min get it good and hot....then shut the car off and try it....just may need a lil heat?
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Old 05-23-2005, 08:19 PM   #7
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well, hammered on it with the wrench, the engine is fairly warm I was driving about 10 min ago. No loosey loosey :( infact broke my 4th 10mm socket.
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Old 05-23-2005, 08:22 PM   #8
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Quote:
Originally Posted by asonofabeach69
infact broke my 4th 10mm socket.



How warm was the engine?
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Old 05-23-2005, 08:32 PM   #9
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LOl stupid question but are u loosing them??? get a strong socket then put a long bar on your racthet or breaker bar and then apply force either the socket will break or if there that bad maybe the bolts but oh well atleast somethign will be destroyed and thta is all that matters
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Old 05-23-2005, 08:36 PM   #10
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Quote:
Originally Posted by asonofabeach69
well, hammered on it with the wrench, the engine is fairly warm I was driving about 10 min ago. No loosey loosey :( infact broke my 4th 10mm socket.
DAMN!!!

Those aluminum bolts would have snapped the heads off before a socket would crack! LOL.

All the ideas would have suggested have already been stated...
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