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draim antifreez unbolt the bolts( studs) on either side of the thermostat housingthe one colser to the front has a nut that is undone first then revome the small ground. then remove the studs lift off housing. then revmove thermostat. clean and dry both surfaces. place in new thermostat, it already has a seal built on it then assemble. start engin top up coolent. you may need to burp the system to release any air locks draim antifreez unbolt the bolts( studs) on either side of the thermostat housingthe one colser to the front has a nut that is undone first then revome the small ground. then remove the studs lift off housing. then revmove thermostat. clean and dry both surfaces. place in new thermostat, it already has a seal built on it then assemble. start engin top up coolent. you may need to burp the system to release any air locks

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Q: How do you replace the thermostat in a 1999 Chevy Suburban?
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