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Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

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I have a 94 Yukon with a 6.5L and the enging will not warm up. Temp gauge only comes up to second line on gauge. Have changed the thermostat and the fitting that comes off the water jacket. Have also changed the fan clutch as ... JOIN NOW TO REMOVE TRACER

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  #1  
Old 12-15-2008, 06:46 PM
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Default Truck will not warm up.

I have a 94 Yukon with a 6.5L and the enging will not warm up. Temp gauge only comes up to second line on gauge. Have changed the thermostat and the fitting that comes off the water jacket. Have also changed the fan clutch as old one was locked up and wouldnt release. also changed heater core. Anything i am missing or any ideas what could be wrong.:argh:
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Old 12-15-2008, 07:23 PM
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Maybe it's cold enough to where you have to block the radiator with cardboard.

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Old 12-15-2008, 08:30 PM
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Just put some in, Havent gone anywhere to see if it works or not yet. We changed the heater core cause there is very little heat in the cab.
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Old 12-15-2008, 08:38 PM
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Don't worry about it overheating cruising down the highway/freeway empty if you forgot to remove the cardboard. Mine stays just below 200.
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Old 12-15-2008, 08:48 PM
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not worried about o/h right now. -45 celcius in the wind
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Old 12-15-2008, 09:18 PM
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i asume none of the coolant is dissapearing?
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Old 12-15-2008, 10:00 PM
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No none of the coolant is disappearing. The cardboard did get me one more line on the gauge. I still have the top half of the fan shroud off from changing the fan clutch this afternoon. Would that make a difference?
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Old 12-15-2008, 10:05 PM
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It would a little bit, because the shroud helps the fan suck more air from the outside of the radiator to the inside.
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Old 12-16-2008, 11:05 AM
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Originally Posted by bonk View Post
not worried about o/h right now. -45 celcius in the wind
Are you in N.Canada?

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Old 12-16-2008, 03:29 PM
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No i am in Regina.
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