Invalid Data Received From Rear Gate Module

Where it lives

For U0531, the description names the module as the part involved.

Check these first

• An open or short in the rear gate module wiring to the module that receives its data
• A lost power or ground feed to the rear gate module
• Stale calibration or an outdated software load in the rear gate module
• Electrical noise on the data bus corrupting the rear gate module signal

What to do next

1. Scan all modules and record the stored and pending network codes
2. Check the rear gate module data bus wiring for opens, shorts, and chafing
3. Confirm the rear gate module reports correct live data on the scan tool
4. Repair or replace the rear gate module if the circuit, power, and bus tests pass
5. Clear the code and retest to confirm the rear gate module fault is gone

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