Don't forget that a leaking tranny oil cooler will also allow oil into the cooling system. Another cause for the lack of heater heat could be the oil clogging the heater. More testing is needed before anyone begins yanking things apart.
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ASE Certified Master Automotive Technician w/L1.
ASE Certified Master Medium/Heavy Truck Technician.
Certified EVT (Emergency Vehicle Technician)
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