Thermostat replacement, how do I do it? - Page 3 - 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 12-01-2005, 12:35 PM   #21
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Vig..the T stat can be drilled for the SC applications. See Willwrens mods. He'* has good pics of it.

CC...time for a flush.
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Old 12-01-2005, 12:38 PM   #22
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I guess I'd might as well flush it. How many gallons do our cars take?

There'* a huge rack of pre-mixed dexcool at my work, I can take as much as I want.
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Old 12-01-2005, 12:53 PM   #23
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Quote:
Originally Posted by BillBoost37
CC...time for a flush.
52k or 5 years overdue
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Old 12-01-2005, 01:01 PM   #24
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Quote:
Originally Posted by corvettecrazy
Quote:
Originally Posted by BillBoost37
CC...time for a flush.
52k or 5 years overdue
What? I'm confused.
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Old 12-01-2005, 02:09 PM   #25
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Quote:
Originally Posted by BillBoost37
Vig..the T stat can be drilled for the SC applications. See Willwrens mods. He'* has good pics of it.
It can be done for non-super charged applications too.

Quote:
52k or 5 years overdue
That'* Bill taking the thread off topic..
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Old 12-01-2005, 02:55 PM   #26
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OHH...CC...Corvette crazy...d'oh
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Old 12-01-2005, 03:29 PM   #27
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Any tips on removing vacuum lines? I can't get the two off of the throttle body.
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Old 12-01-2005, 03:48 PM   #28
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You shouldn't have to remove vacuum lines to change the thermostat. The only thing you'd want to remove would be the upper radiator hose. You can also remove the air intake snorkel for more room, if you'd like...although it'* not necessary.
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Old 12-01-2005, 04:14 PM   #29
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Tstat successfully installed!

One question: I forgot to pour coolant in where the thermostat goes...but I filled the radiator and overflow back up. Is it okay for me to start the car?
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Old 12-01-2005, 04:22 PM   #30
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As long as everything'* full, you're good to go to start the car.

Fire it up and check for leaks around the t-stat housing and also at either end of the radiator hose. It won't hurt to climb under the car to validate you have the pet **** completely turned off, either.

Once you start the car open the bleeder vent on top of the t-stat housing. Once fluid oozes out from it, close it. That will ensure you have removed all the air from the system.

The fluid level will drop in the car once the engine reaches operating temp (thermostat opening). Add coolant to the overflow jug to bring the level back to the normal range.

Good job!
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