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P0128 Diagnostic Trouble Code Discussion for June 2011

Thermostat System Malfunction

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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2003 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: IGNDS13S43
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. ... valuble time to read this and respond. I have this 03 Trailblazer that seems to be giving me a bad time. For about a year now, I've had this p0128 code. I've replaced the thermostat two times now, ect sensor one time (GM parts) flushed the cooling system, ...
June 08, 2011