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Old 03-25-2010, 12:47 AM
1500HD/2003 1500HD/2003 is offline
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trans temp

what is the normal operating temp for an 1500hd on the trans not towing.
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Old 03-25-2010, 05:38 PM
mwid73 mwid73 is offline
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Re: trans temp

I have the same truck, except mine's an '02. When it's fairly warm in the summer time it will run about 170-185 on the highway at 70 mph. During our cold N. Dakota winters it will barely crack 130. When pulling our goose neck stock trailer in tow haul mode it will run 200-220....
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Old 03-25-2010, 06:03 PM
j cAT j cAT is offline
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Re: trans temp

Quote:
Originally Posted by 1500HD/2003 View Post
what is the normal operating temp for an 1500hd on the trans not towing.
anything above 190 deg f you should have an external cooler...
use the new GM dexron VI this is synthetic and synthetics run cooler, better heat tranfer ..
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