What causes the transmission to not shift from 3 to 4
What is your question?
Just become owner ,have checked relays and fuses.Have also been checking wiring .I believe it is in limp mode because i have seen the message no speed over 90 flash 2 times .I also have checked codes PCM p0102,p0753,p1645 and ipc u1000 still current ,any information would be greatly appreciated ,thank you.
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