Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Global Positioning System Module (GPSM)
| DTC | Description | Action |
|---|---|---|
| U0100:00 | Lost Communication with ECM/PCM "A": No Sub Type Information | GO to PINPOINT TEST X |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to PINPOINT TEST Y |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information | GO to PINPOINT TEST Z |
| U0401:00 | Invalid Data Received from ECM/PCM A: No Sub Type Information | RETRIEVE and FOLLOW Diagnostic Trouble Codes (DTCs) present in the PCM
.
|
| U0422:00 | Invalid Data Received from Body Control Module: No Sub Type Information | RETRIEVE and FOLLOW Diagnostic Trouble Codes (DTCs) present in the BCM
. REFER to: BODY CONTROL MODULE (BCM) . |
| U0423:00 | Invalid Data Received from Instrument Panel Cluster Control Module: No Sub Type Information | RETRIEVE and FOLLOW Diagnostic Trouble Codes (DTCs) present in the IPC
. REFER to: INSTRUMENTATION, MESSAGE CENTER AND WARNING CHIMES . |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information |
|
| U2101:00 | Control Module Configuration Incompatible: No Sub Type Information |
|
| U3000:09 | Control Module: Component Failure |
|
| U3000:41 | Control Module: General Checksum Failure |
|
| U3000:42 | Control Module: General Memory Failure |
|
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to PINPOINT TEST AD |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to PINPOINT TEST AE |
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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