Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

coolant system

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Old Mar 22, 2015 | 12:41 PM
  #1  
LTreis702's Avatar
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Diesel Fan
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Default coolant system

I changed my thermostats now it seams like I have air in the system the temp gage goes rite above 210 then drops rapidly then goes up again
 
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Old Mar 26, 2015 | 12:08 PM
  #2  
Floyd400's Avatar
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Joined: Dec 2013
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From: Northern Indiana
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That stat is DOA. All aftermarket stats suck, really. AC Delco and I believe Robert Shaw are the only good brand of stat for a 6.5. Replacing the stat requires purging air from the system.
 
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