avtonomb Posted May 15, 2013 Report Share Posted May 15, 2013 Recently had some problems that got fixed at Chevy dealer (water pump replaced and tranny issue). After I got the truck back the efans are always on. Cold, hot, ac on/off, basically always on! Never did that before. They did have to reflash the PCM back to stock to diagnose the tranny so I lost my tune. Any ideas? 90k miles ( tried search couldn't find an answer) Quote Link to comment Share on other sites More sharing options...
JC03SS Posted May 15, 2013 Report Share Posted May 15, 2013 Gonna have to retune for the fans. I'm sure they re flashed it and now the fans don't know to turn off. At least there on and not always off lol. Get ahold of your tuner Quote Link to comment Share on other sites More sharing options...
avtonomb Posted May 15, 2013 Author Report Share Posted May 15, 2013 Good answer, but my truck is stock other than CAI, magnaflow and used to be Wheatley tune. They're from the factory fans Quote Link to comment Share on other sites More sharing options...
Muggs Posted May 16, 2013 Report Share Posted May 16, 2013 I thought Wheatley locked his tunes Quote Link to comment Share on other sites More sharing options...
The_aSSet Posted May 16, 2013 Report Share Posted May 16, 2013 I thought Wheatley locked his tunes He used to for sure, but he's getting more lax about that. Quote Link to comment Share on other sites More sharing options...
onebadmax Posted May 18, 2013 Report Share Posted May 18, 2013 The dealer can unlock pcms. Doesn't matter they can write over it. Quote Link to comment Share on other sites More sharing options...
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