04.5 no start
09-19-2009, 09:07 PM
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04.5 no start
have an 04.5 truck that won't start, cranks but no start, scan tool says no communication. any ideas? where is the pcm located on these trucks?
09-20-2009, 09:47 AM
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lift pump is in the tank, it will not cycle with key. I tried to bypass with jumper wire and can get the pump to work that way. I know this truck may need a recovery file, but need communication with the pcm first
09-20-2009, 10:23 AM
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try using an alternative fuel source to try and see if it will start and run. the pcm i believe is on the drivers side on the motor next to the ecm
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09-20-2009, 02:45 PM
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Check your scan tool connection to the OBDII port. If you bent a pin (pretty hard to do but possible) you might get a com error. If everything at the OBDII looks good you may want to check the backplane and make sure everything is still connected.
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