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jtramsey

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I just purchased a 2009 gmc seirra 4.8.What is the normal operating temperaturefor the transmission.Normal driving and towing?

 

 

Welcome, not to sure on the temps. My 2010 hasnt got over 187 and that was in the mountains driving in the middle of summer.

Posted

170-190 range. 200-225 isnt abnormal when its hot or towing

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Welcome to GMT.

 

I agree with Ryan above those are around the normal range that I have seen on my 02.

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