Cooler thermostat on an '04
#1
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I have an '04 Suburban 6.0L and I've been toying with the idea of installing a 160 degree thermostat. I have a 1996 Impala SS and have done this and the car runs well, though I needed to have the electric fans programmed differently, this is not the case with the Suburban with the mechanical fan.
I have heard that the '04 will behave differently (shifting, etc) if the truck gets a 160 stat and no programming. I've searched the forum for this info, but could not come across the info.
If I do go with a 160 degree stat for the Suburban (6.0L), even though it has a single mechanical fan, will I need to re-program the PCM?![EEK !!](https://www.performancetrucks.net/forums/images/smilies/LS1Tech/gr_eek2.gif)
Thanks.
I have heard that the '04 will behave differently (shifting, etc) if the truck gets a 160 stat and no programming. I've searched the forum for this info, but could not come across the info.
If I do go with a 160 degree stat for the Suburban (6.0L), even though it has a single mechanical fan, will I need to re-program the PCM?
![EEK !!](https://www.performancetrucks.net/forums/images/smilies/LS1Tech/gr_eek2.gif)
Thanks.
#2
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I have 2004 Silverado SS that I changed to a 160 stat and it works like a charm without programming, runs right at 175 to 180. The radiators aren't big enough on these vehicles to cool one down to 160 in the summer or fall, I haven't been thru winter yet, so I'll know then if it runs any cooler. In the dead of summer with the A/C on, it still runs over 200. The computer knows no different.
#3
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That good to know. On my Impala, the 160 stat in the heat of summer towing 6300lbs the engine rarely got to 200. I wonder why the 6.0L in the heat of summer passes 200 still. I think 210 is too hot, though our 1985 454 Suburban also rested year round at 210 as well.
Not sure why 210 is a magic number here compared to say 180.
Anyone else do the 160 stat mod on a 6.0L truck?
Not sure why 210 is a magic number here compared to say 180.
Anyone else do the 160 stat mod on a 6.0L truck?
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