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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Heating And Cooling System) >> Diagnostic Information and Procedures >> DTC P0495 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, verify the fan clutch is not seized or binding.
  2. Ignition ON, Verify DTC P0480, P0483, or P0526 is not set.
    • Go to next step: If no DTC is set 
  3. Operate the engine at 1, 500 RPM in operating temperature with all accessories turned OFF, for greater than 10 minutes.
    4. NOTE:

    Depending on elevation above sea level it may take up to 52 minutes for the fan clutch to completely disengage.

  4. Verify DTC P0495 is not set.
    • If the DTC is set 

      Refer to Circuit/System Testing.

    • Go to next step: If no DTC is set 
  5. All OK.
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