Chevrolet Trax Owners & Service Manuals

Chevrolet Trax: DTC U0300-U0336: See control module u code list

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

Refer to Control Module U Code List.

Circuit/System Description

Some devices must be configured with specific software, serial numbers, vehicle options, or other information.

If a device was not properly configured after installation that device may set the appropriate communication DTCs. No external circuit diagnosis is involved.

Conditions for Running the DTC

Battery voltage is between 9-16 V and data link communications operate normally.

Conditions for Setting the DTC

The device is not configured properly.

Conditions for Clearing the DTC

  • A current DTC clears when the malfunction is no longer present.
  • A history DTC clears when the device ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Reference Information

Schematic Reference

  • Data Communication Schematics (Encore), Data Communication Schematics (Trax)
  • Control Module References

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Description and Operation

Data Link Communications Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC U0300-U0336 is not set.

If DTC U0300-U0336 is set

  1. Program the device specified by the DTC descriptor.
  2. Verify the DTC does not set.
  • If the DTC sets, replace the device specified by the DTC descriptor.
  • If the DTC does not set
  1. All OK.
  • If DTC U0300-U0336 is not set
  1. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for device replacement, programming and setup

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