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Question Asked: Code PO128
March 12, 2013, 04:31 PM
I replaced the coolant temp sensor. I am still getting a PO128 code. I tested the sensor and it tests good. The gauge reads 200. What else could be causing the code?
Question Asked: I keep getting the PO128 code on my 05 Trailblazer.
March 10, 2013, 01:02 PM
I've changed the coolant temp sensor 3 times. What else could be the problem?
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