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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 94 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> Ignition Relay Diagnosis >> 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 ON.
  2. Verify the KR75 Engine Controls Ignition Relay clicks when cycling the ignition from OFF to ON.
    • If the relay does not click 

      Refer to Circuit/System Testing

    • Go to next step: If the relay clicks 
  3. Verify with a scan tool that DTC P0201B, P0201D, P16F3 or P20F8 are not set.
    • Go to next step: If DTC P0201B, P0201D, P16F3 or P20F8 are not set 
  4. All OK.
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