How hot should a Duramax transmission be?
How hot should a Duramax transmission be? If you own a 2001-2004 LB7: Duramax your normal operating temperatures will run around 160-180 degrees. These transmissions will warm up when towing or driving in the summer months. 200-225 is very common when the ambient air temp is 80-100 degrees and your transmission is under an increased load. Is the temperature gauge hot but not overheating? Temperature gauge hot but engine is not overheating. have the same problem? Have you checked your coolant level lately? I would start there. helpful? The temperature gauge can show hot without the engine overheating which still...