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Chevrolet Aveo 2004 aveo showing codes p1781, p0300, p0700,

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2004 aveo showing codes p1781, p0300, p0700, p0700pd, p0300pd when driven for awhile transmission won't shift into 4th and check engine light starts blinking

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Often this problem can be caused by a faulty crankshaft position sensor or it just needs to be relearned Disconnect battery cables and short them together for a few minutes to reboot the Electronic Control Module memory. Reconnect the cables and perform the Crankshaft Position relearn using a scan tool, this can also possibly be a timing problem or a faulty ECM

Customer: replied 5 years ago.
How do I perform the crankshaft position relearn
Customer: replied 5 years ago.
What is a ECM?
The relearn must be done using a scan tool, the ECM is short for engine control module or computer
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