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Discussion Starter #1
i have a 96 deville and the heat blows hot for ever but once i sit and idle for about 5 mins its starts blwing cold, and then for the rest of the day or night it will blow out cold air no matter wut i do, anyone have any suggestions? thermostat? heater control valve? helpp
 

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White Diamond '03 DHS (with DTS floor shift)
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86,788 Posts
Check the coolan level, thermostat, purge line & water pump drive belt tensioner for starters.
 

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Discussion Starter #3
yeah my coolant level was low so i just topped it off, and just for the moment i put just water in, not dexcool, is this really bad for the aluminum in the motor or what do you think?
 
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