GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

truck overheated WTF!

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Old Apr 13, 2008 | 03:22 PM
  #21  
Derek @ EDO's Avatar
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Originally Posted by Maroon20's.
If you have the nelson harness, make sure the pin is plugged into the pcm good, mine wasn't and my fans weren't operating correctly.
That wont matter if the PCM is not tuned.
One fan will activate only when the AC is activated.
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Old Apr 13, 2008 | 04:31 PM
  #22  
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seems to me. If its happening at idle, its a fan problem. If it happens at speed, like 45mph plus its a tstat problem.
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Old Apr 13, 2008 | 08:59 PM
  #23  
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Originally Posted by slownlow4.8
the truck was not tuned for the fan or t-stat
That is why you are overheating - your fan is never coming on.
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Old Apr 15, 2008 | 01:24 AM
  #24  
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Originally Posted by SnakeOiler
That is why you are overheating - your fan is never coming on.
lol
This thread makes me want to poke my own eyes out
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