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Home >> Chevrolet >> 2023 >> Express 2500 Base, Van Cargo Extended, 6.6L Eng VIN 7 >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications >> Diagnostic Information and Procedures >> DTC U18A2 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify DTC P12A6, P16D7, U0073, U0074, U0075, U0076, U0077, U0078, U007A, U007B, U007C, U007D, P06E4, P1EB9, U1814, U2099, B1325, B1330, B1370, B1380, B1424, B1428, B1440, B1441, B1517, C0800, C0899, C12E1, P0560, or P0562 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing.
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