Hello,

Any Ideas why no crank? I did replace the key switch. That was bad. If I were to wiggle the key. The beeping saying your key was left in the ignition would stop beeping. I took out the PCM and BCM they are dry and crosion free. I cleaned all wiring connectors under both pass and driver kick panels. And under the hood. All the fuses and relays are good. I can hear the gray relay clicking on when the key is turned on. I also hear the BCM relay clicking under passanger kick panel area. I can make starter crank manually by removing relay and jumpering wire to starter but it will not start. I hear the fuel pump for 3 seconds when I turn on key. There is no security light on dash. Battery is new. I am thinking the BCM is bad. Everything works in the truck except for the blower motor. I can also make the blower motor run by removing the relay and jumpering the two wires. Forscan has a bunch of codes. Using forscan I reset all modules and also pushed the as build. Still no luck. Any opinions would help.





===PCM DTC None===
Successful DTC reading, no error codes found

Module: Powertrain Control Module

===END PCM DTC None===

===OBDII DTC None===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II

===END OBDII DTC None===

===APIM DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0100:00-28===

===APIM DTC U0151:00-2B===
Code: U0151 - Lost Communication With Restraints Control Module

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0151:00-2B===

===APIM DTC U0422:00-28===
Code: U0422 - Invalid Data Received From Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0422:00-28===

===APIM DTC U3003:16-28===
Code: U3003 - Battery Voltage

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U3003:16-28===

===BdyCM DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U0100:00-08===

===BdyCM DTC U3003:16-08===
Code: U3003 - Battery Voltage

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U3003:16-08===

===BdyCM DTC P0230:12-08===
Code: P0230 - Fuel Pump Primary Circuit

Additional Fault Symptom:
- Circuit Short To Battery

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC P0230:12-08===

===BdyCM DTC B10D9:87-08===
Code: B10D9 - PATS Transponder

Additional Fault Symptom:
- Missing Message

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC B10D9:87-08===

===BdyCM DTC U0212:00-08===
Code: U0212 - Lost Communication With Steering Column Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U0212:00-08===

===SCCM DTC B11D9:16-08===
Code: B11D9 - Vehicle Battery

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC B11D9:16-08===

===SCCM DTC B1131:08-08===
Code: B1131 - Wiper motor module

Additional Fault Symptom:
- Bus Signal/Message Failures

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC B1131:08-08===

===IPC DTC P0460:13-08===
Code: P0460 - Fuel Level Sensor A Circuit

Additional Fault Symptom:
- Circuit Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC P0460:13-08===

===IPC DTC U3003:16-08===
Code: U3003 - Battery Voltage

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U3003:16-08===

===IPC DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0100:00-08===

===IPC DTC U0121:00-0A===
Code: U0121 - Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A'

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0121:00-0A===

===IPC DTC U0131:00-0A===
Code: U0131 - Lost Communication With Power Steering Control Module 'A'

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0131:00-0A===

===IPC DTC U0140:00-08===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0140:00-08===

===IPC DTC U0151:00-0A===
Code: U0151 - Lost Communication With Restraints Control Module

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0151:00-0A===

===IPC DTC U0154:00-0A===
Code: U0154 - Lost Communication with Restraints Occupant Classification System Module 'A'

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0154:00-0A===

===IPC DTC U0401:81-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Additional Fault Symptom:
- Invalid Serial Data Received

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0401:81-08===

===IPC DTC U0462:82-08===
Code: U0462 - Invalid Data Received From Compass Module

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0462:82-08===

===IPC DTC U0401:00-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0401:00-08===

===FCIM DTC U3003:16-28===
Code: U3003 - Battery Voltage

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Front Controls Interface Module

===END FCIM DTC U3003:16-28===

===FCIM DTC U0140:00-28===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Front Controls Interface Module

===END FCIM DTC U0140:00-28===

===RTM DTC None===
Successful DTC reading, no error codes found

Module: Radio Transceiver Module

===END RTM DTC None===

===HVAC DTC B10AF:11-0A===
Code: B10AF - Blower Fan Relay

Additional Fault Symptom:
- Circuit Short To Ground

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC B10AF:11-0A===

===HVAC DTC B10AF:13-08===
Code: B10AF - Blower Fan Relay

Additional Fault Symptom:
- Circuit Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC B10AF:13-08===

===HVAC DTC B11E5:15-08===
Code: B11E5 - Left HVAC Damper Position Sensor

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC B11E5:15-08===

===HVAC DTC B11E7:15-08===
Code: B11E7 - Air Distribution Damper Position Sensor

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC B11E7:15-08===

===HVAC DTC B11F0:15-08===
Code: B11F0 - Air Intake Damper Position Sensor

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC B11F0:15-08===

===HVAC DTC B1B71:15-08===
Code: B1B71 - Evaporator Temperature Sensor

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC B1B71:15-08===

===HVAC DTC U0140:00-08===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC U0140:00-08===

===HVAC DTC U0401:68-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Additional Fault Symptom:
- Event Information

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC U0401:68-08===

===HVAC DTC U0401:82-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Heating Ventilation Air Conditioning

===END HVAC DTC U0401:82-08===

===ACM DTC U3003:16-28===
Code: U3003 - Battery Voltage

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Audio Control Module

===END ACM DTC U3003:16-28===

===ACM DTC U0197:00-24===
Code: U0197 - Lost Communication With Telephone Control Module

Status:
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Audio Control Module

===END ACM DTC U0197:00-24===

===GPSM DTC U3003:16-88===
Code: U3003 - Battery Voltage

Additional Fault Symptom:
- Circuit Voltage Below Threshold

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Global Positioning System Module

===END GPSM DTC U3003:16-88===

===GPSM DTC U0422:00-8A===
Code: U0422 - Invalid Data Received From Body Control Module

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Global Positioning System Module

===END GPSM DTC U0422:00-8A===

===FDIM DTC B1318-20===
Code: B1318 - The battery voltage level is too low.

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Front Display Interface Module

Diagnostic Trouble Code details

Battery Voltage Too Low

Battery Voltage Low

This DTC may have been set as a result of a discharged vehicle battery or a poor supply connection to the heater unit.

===END FDIM DTC B1318-20===


found the issue, it was the accessory relay in the fusebox under the hood. No DTC and cranks and starts