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2004 Pontiac Grand Prix GT with engine code P0128, what is the best solution?

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2004 Pontiac Grand Prix GT with engine code P0128, what is the best solution?

Vehicle: 2004 Pontiac Grand Prix GT

1 Answer

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Usually the problem is the thermostat.

P0128 PONTIAC - Engine Coolant Temperature Below Thermostat Regulating Temperature

Read more: https://www.autocodes.com/p0128_pontiac.html

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