Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is***** am an ASE Master Technician and I am glad to help you with your question.
What are the codes causing the engine light to stay on have you had this scanned?
Make sure the cooling fans are coming on and working. Also this engine is common for head gasket problem.
Does it blow hot air from the vents with the heat on?
A blown head gasket would cause bubbling in the cooling system as well as an overheat problem. You need a cooling system pressure tester, and make sure the system holds pressure. Also can run engine with gauge installed to see if pressure rises from combustion gases entering cooling system.
Try flushing the cooling system you might have a clogged radiator or heater core.
Also make sure the cooling fans are working.
Make sure the is no air in the cooling system by performing the bleed procedure.
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