My 2007 GMC club cab 4x4 LBZ only has 110K... I intend on driving for many moons... the overheat condition you experienced could be due to air trapped in the cool8ng system.. when radiator coolant is replaced it’s imoerative on a duramax to make sure the bleed screw is opened after filling to burp the trapped air.. I’d check that as well as condition of cleanliness of radiator and tranny cooler fins..
If you have a buildup on those fins or between them it could cause cooling issues.. I regularly tow in over 100 degree weather with my LBZ and never have seen abnormal temps...
Yea so you might replace the front wheel bearings, shocks, etc... mighty cheap compared to 55K plus the6 are asking for the new ones
