Question about 1997 GMC Safari

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97 GMC Safari - best type thermostat, location, temp?

Likely need to replace thermostat, please recommend types, the correct operating temp and location in engine for replacement?

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The owners manual will tell you the temp you should use, but you can also look at the old one when you pull it out as it will have the value stamped on it. As for the brand, most are all okay. I use stant brand since that's what the local parts store carries. To find the thermostat under the hood, follow the top radiator hose to the engine block and a domed housing. It's under the housing.

Posted on Jan 12, 2009

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1 Answer

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Hello,

Humm I make the assumption that you don't have overheating problems. Yes, sounds like a thermostat is stuck open. If you have a gage on the dash you may also notice that the engine temp takes a long time also. Sometimes when you sit a light for a while the temp edges up and starts to get warm....then when moving down the road a higher speeds the temp cools off again. this does this because the thermostat may be stuck open and it cools the heated water in the engine when moving. Also, check the coolant level in the radiator. (only do this when cold!!!!!!!!) ok????? NOT HOT! low coolant can affect how the heater performs. (low volume)

Hope this helped. :)
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