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Old 02-18-2010, 06:06 PM
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Default 2000 Silverado P0340

5.3. recent change of crankshaft sensor. Well lets go back. A squirrel decided to try to make a nest under the hood and severed about 8 wires under the top housing and ruined 3 injector modules. all replaced and re-attached per chevy mechanic. The squirrel is not available anymore. As said replaced the crankshaft position sensor (that was the only code at that time) and now P0340 shows up. Of course hard or no starts most of the time. Sometimes starts right up (usually if it sits for a day or so). Do I replace the camshaft sensor next or is there a better solution? Thanks for any help.
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Old 02-18-2010, 06:12 PM
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Join Date: Jan 2010
Location: Oak Grove,Ky
Posts: 157

Found this....
A code P0340 could mean one or more of the following has happened:

Possible Solutions

With a P0340 OBD-II [COLOR=#009600 ! important][COLOR=#009600 ! important]trouble [COLOR=#009600 ! important]code[/COLOR][/COLOR][/COLOR], diagnosis can be tricky at times. Here are some things to try:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required
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Old 02-18-2010, 08:08 PM
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Join Date: Nov 2008
Location: Bowie, MD
Posts: 2,955

Who installed the crank sensor? A relearn procedure MUST be done using a scan tool that can perform the procedure.
ASE Master Tech, L1 Advance Engine Performance certified
I will not answer repair questions by PM, if you would like my input you can PM me and ask me to reply to your public thread.
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Old 02-22-2010, 07:06 PM
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Join Date: Feb 2010
Posts: 2

Thanks. Checking into both above. Friend (chevy service writer) helped me.
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