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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P30D3 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P30D3 is not set.
    • If the DTC is set 
    1. Replace the component: K20 Engine Control Module
    • Go to next step: If the DTC is not set 
  3. All OK.
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