Pontiac Firebird and Trans Am

Pontiac Firebird and Trans Am Questions.


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How Things Work

Radio Unlock Codes- Stereo Shows LOC or INOP

Does Your GM Radio Display Show LOC or INOP? Did you disconnect or replace your battery or radio and now the theft system is activated? Don't pay the Dealer up to $100 to unlock your stereo ?

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Common Engine Codes

Coolant Temperature Sensor Code P0117 Or P0118

The engine coolant temperature (ECT) sensor is a variable resistor, that measures the temperature of the engine coolant. The powertrain control module (PCM) supplies 5 volts to the ECT signal circuit and a ground for the ECT low reference circuit.

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