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Electric fans-2007 Sierra SLT

Old 12-07-2017, 06:32 PM
Thread Starter
Join Date: May 2009
Location: Jacksonville, Florida
Posts: 16
Question Electric fans-2007 Sierra SLT

Need help..
I had a tuner(ef-live) make some changes to my PCM back in 2014, all was well until I recently performed the DOD/AFM delete, cam swap. The tuner went back in did some tune adjustments. A few days later while sitting in traffic I realized the temp gauge needle sitting at the 210-212 mark which was not normal to me. Then I realized I could not hear the variable electric fans, to which we all know can be heard on high when needed. The fans are operating on a low-medium speed only. I went back to the tuner and he plugged his laptop in and was able to 'command' both fans to high speed, but only with the laptop. I saw this for myself while he scrolled the pointer from on to off. I figure someone has experienced this and hope I get a hit.
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