CadillacCoffee Posted February 17, 2021 Report Share Posted February 17, 2021 I have a 2008 DTS that is overheating due the fans not operating correctly. The fans do not come on. Only 1 fan will come on if you run the AC, the passenger side fan runs with the AC on, the driver side fan does not run at all. I replaced the entire fan assembly (2 fans in the assembly) same thing happened with the new fan. I checked the relays, they tested good, I replaced the relays just for the sake of it, fuse is an inline fuse you can view, it looks good, put a reader on it tested good, coolant levels are good, replaced thermostat for good measure. What can the issue be? why is the driver side fan not coming on, and why is the fans not running without the AC on? This is driving me crazy. Quote Link to comment Share on other sites More sharing options...
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