Questions & Answers for: 2004 chevrolet trailblazer code po128

...code po128 the sensor should be located on the thermostat housing...follow the upper rad hose to the engine, where it enters the engine is the thermo housing...should have an oval plug with 2 ...

code po128 coolant thermostat Replace the thermostat/ housing assy

Code PO128 2005 TBlazer changed the ECT sensor. Light comes back on after about 20 miles of driving. What else to replace? replace the thermostat, your engine isnt getting hot enough.

...2004 chevy trailblazer LT. i went to take the care through marta this morning so i can renew my tags for my car. the man told me that the trouble sensors are P0014 and PO128.What is that? now the man ...

2004 trailblazer code po128 yea my check eng light came on it is code po128 how do i fixes it P0128: P0128 OBD-II Trouble Code Technical DescriptionCoolant Thermostat (Coolant Temperature Below ...

engine code po128 Did not pass Ill. EPA change your thermostat, and while you are down there, suggest you change your coolant temp senor too Engine is running too cold (rich)