What is an acceptable GM 6.5l Diesel operating Temp?

Asked by Guru3X4RT Jul 03, 2020 at 03:36 PM about the 2000 GMC Savana Cargo G3500 Cargo Van Extended

Question type: Maintenance & Repair

I just purchased my first Diesel, a 2000 GMC Savana 3500. The temp creeps
up when I tow a load ( generally 3500-6500lbs on my 18ft car hauler).
Yesterday it was very hot here in Florida and the gauge would go up near
235 and I could hear the fan clutch engage, it would drop to about 210 and
disengage. I'm not used to temps getting that high, is there cause for
concern? how do I get it running cooler, or do I even need to?

1 Answer

F_O_R answered 3 years ago

I would do something about the 235 degree temps. A HD radiator is the first thing I would do. Check out Mishimoto.

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