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Discussion Starter · #1 ·
Really need help… Bought this mess 2 years ago, have had endless repairs done. Now it’s just shutting off while driving. Re-did FICM, got new harness to snap into FICM. So exhausted trying to figure this stooooopid truck out. could it be the PCM??? How do I know if PCM is bad???
 

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It is rarely the PCM.

Get a good code reader.

ForScan Lite for a smartphone is recommended ..... along with the appropriate OBDII adapter.
 

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Can’t tell by your comment but an ignition switch will go out while you are driving and start working after it sits for a while, everything will turn off except the lights it will immobilize the starter also because when you turn the switch on it energizes the starter your fuel pump will also be off with it?
 

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Need to get codes. Detailed information about what the PIDs are when it shuts off and engine monitoring while restarting to see what is happening is needed.
 

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If/when the OP returns, it will be interesting to find out what all was purchased in an effort to fix the engine without data.

Maybe he didn't "really need help".
 
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