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HOMESERVICE MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 13 (ENGINE CONTROLS AND FUEL - 2.8L (LWN) DIESEL - DIAGNOSTIC INFORMATION AND PROCEDURES (2 OF 3))DIAGNOSTIC INFORMATION AND PROCEDURESDTC P157ACIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G

Circuit/System Verification

2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Circuit/System Verification
WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON.
  2. Verify with a scan tool that no other DTC is set.
    • Go to next step: If no other DTC is set 
  3. Operate the vehicle within the Conditions for Running the DTC. It may be helpful to operate the vehicle within the conditions identified from the Freeze Frame/Failure Records data
  4. Verify DTC P157A is not set.
    • If the DTC P157A is set. 

      Refer to Circuit/System Testing.

    • Go to next step: If the DTC P157A is not set. 
  5. All OK.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.