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Changed my thermostat
And the ect sensor and added coolant
And the light is still on

Vehicle: 2005 Chevrolet silverado 4.3

1 Answer

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Hi there,

Here is a list of possible causes for a engine coolant temp sensor code.

P0128 CHEVROLET - Engine Coolant Temperature Below Thermostat Regulating Temperature

Read more: https://www.autocodes.com/p0128_chevrolet.html

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