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Home >> Buick >> 2017 >> LaCrosse Essence >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U240A: Transmission Range Control Module Chassis Expansion CAN Bus >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify DTC U240A is not set.
    • If DTC U240A is not set 
  3. All OK
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