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Lo fan problem


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Hey guys,

All winter I've been having problem with the low speed on my cooling fans (2007 NBS 5.3L Crew Cab Sivlerado). It hasn't actually overheated but in the summer the engine temp stays right at 195 degrees, and if it gets any warmer the low fans kick on and keep it around there. All winter though (below about 45 degrees F) the lo fans never seem to kick on, the engine won't cool itself off until it hits around 215 and the Hi fans kick on. Has anybody else had this problem? I tried switching the relays between hi/lo and it didn't change anything. When it gets warm the lo fans work fine.

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