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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Automatic Transmission - VT40 (MRG) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0730 >> Circuit/System Verification

Circuit/System Verification

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  1. Verify there are no DTCs/symptoms related to the following system/component, if equipped:
    • B12BA Transmission Fluid Pressure Sensor 1
    • B12BB Transmission Fluid Pressure Sensor 2
    • B14A Transmission Output Shaft Speed Sensor
    • B14C Transmission Input Shaft Speed Sensor
    • B14D Transmission Intermediate Shaft Speed Sensor
    • Q77 Transmission Control Solenoid Valve
    • Go to next step: If a related DTC is not set 
  2. Verify the following conditions do not exist: Incorrect fluid level or condition - Transmission - Refer to Transmission Fluid Level and Condition Check 
    • If a condition exists 

      Repair as necessary

    • Go to next step: If no conditions exist 
  3. Verify the condition does not exist: Hydraulic/Mechanical Problem - Transmission - Refer to Slips in Drive or No Drive 
    • If a condition exists 

      Repair as necessary

    • Go to next step: If no conditions exist 
  4. All OK.