Silverado, Sierra & Fullsize Pick-ups The Silverado & Sierra have been two of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

Drastic drop in MPG with no change in Engine Performance..

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Old Feb 18, 2010 | 3:46 PM
  #11  
OSU_METGRAD's Avatar
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gotstylez, your right... I could have brand new tires and have them at a low pressure. However, they are inflated to the correct psi. Keep me honest...lol.

I'm actually in Oklahoma. I am a Oklahoma State University Cowboy grad...

Yes, I'll see if I can get the fluid/filter changed this weekend. Though, I may be wrong, but if the engine was having to work harder to move the trans, wouldn't that cause the shift points to change?? Meaning it would be shifting at a higher RPM than normal.
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Old Feb 18, 2010 | 3:51 PM
  #12  
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Originally Posted by OSU_METGRAD
gotstylez, your right... I could have brand new tires and have them at a low pressure. However, they are inflated to the correct psi. Keep me honest...lol.

I'm actually in Oklahoma. I am a Oklahoma State University Cowboy grad...
.

oh haha.. it was just a guess anyway! hope u get it figured out.. i have no idea besides the trans needing to be flushed!
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