4.6L L37 Engine - Crank , No Start , Possible DTC P0412 - kw PCM connector

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

04 Pontiac Bonneville 4.6L (L37) engine crank, no start, possible DTC P0412

Remove the PCM connectors and reinstall them to the PCM. Make sure the connector is fully seated before the locking slide is engaged. It‘s possible to have the PCM connector slide in the lock position without having the connector completely seated into the PCM.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(04 Pontiac Bonneville)

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