Looks like I'm having a "bad oil cooler" experience as well.
I'd been tracking a leaking hydraulic line problem and didn't realize some of that mess was probably engine oil. My Dexcool is getting a burnt burgundy tint. So I'm probably there. I'll do a pressure test on the cooling system with the filter off to confirm. Original Dexcool was a continuous leak masking the cooler issue as well due to continual replenishment. Not loosing any coolant just now, oil level has been constant. New water pump has been on about 400 miles.
This on a 2001 GMC 2500HD, SLT, 4x4, 288K. Recently bought, very used. Needed a water pump first thing. Transfer case only had about 8 oz. of lube in it (no visible leak), Heavy deer proof front bumper, winch, headache rack, gooseneck hitch, possible lift pump, new batteries last week.
Last edited by Paladin; 11-28-2014 at 08:39 PM.