PCM Connector Pinouts for P01 - P59 from 1999 to 2006

These are the PCM connector pinouts that will cover 1999 to 2006 4.8/5.3/6.0. Your harness MAY NOT have a pin in a location I have listed having a wire. I have tried to list all possible wires that will show up 99-06. If I show a wire, and your harness does not have it, you probably don't need it anyway. SOME LOCATIONS HAVE MULTIPLE POSSIBILITIES DEPENDING ON WHERE VEHICLE WAS BUILT, MOSTLY DEALING WITH O2 SENSORS. EACH POSSIBILITY WILL HAVE ITS OWN LINE.

BLOCKS HIGHLIGHTED LIKE THIS, ARE WIRES THAT ARE NEEDED, AND GO TO EXTERNAL CONNECTION FOR STAND ALONE

BLOCKS HIGHLIGHTED LIKE THIS, ARE WIRES THAT CAN BE REMOVED FROM PCM CONNECTORS, NOT NEEDED. Note: Removing all of these will result in a non-emissions friendly harness. If requirements are for 4 oxygen sensors, EVAP system, then you will not want to remove those components.

I have been asked to identify the wires for electronic auto trans controls that can be removed if you are not going to use electronic automatic transmission. Here they are, the Pin# will be highlighted in YELLOW. If removing trans, pay attention to BLUE connector pin 41. Some harnesses are different based on type of o2 sensors you have. Some this pin goes to trans only, some harnesses, there is a splice, and this pin goes to coolant temp sensor AND transmission. Simply cut the wire to the trans at the splice if this is the case.

WIRES THAT ARE NOT HIGHLIGHTED REMAIN UN TOUCHED. THEY WILL GO DIRECTLY FROM PCM TO A PLUG, (SENSOR, SWITCH, DEVICE ETC.)