2002 Envoy swap with 2005 4.2L won't start help

Wahed

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I have a 2002 Envoy 4.2L, I put in a 2005 Envoy 4.2L Engine It wont start!!:mad::confused:

1. If I pull off the Crank Position Sensor it runs, but runs really rich...with a Crank Position Sensor Fault Code

2.If the Crank Position Sensor is plugged in, it won't start, and has no Fault Codes.

Timing Chain is right where it should be, injectors and fuel rails are all checked.
Every single sensor is plugged in properly with all pins having correct contact.
Reluctor wheel according to the GM dealer is the same for 2002-2006,
Any help would be greatly apprecieated! PM me or reply here:confused::confused:
 


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