335 Error on a GM Gas Vehicle

    October 31st, 2018

    This means that the tuner was unable to unlock the PCM. 

    Make sure the key is all the way to the on/run position, without starting the engine. Some special edition vehicles such as the Rocky Ridge vehicles will get this code. Our tuners are not compatible with some of these special edition trucks.

    If the issue persists, please contact our Technical Support Team.

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