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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P0449, P0498, or P0499 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the harness connector at the Q13 Evaporative Emission Vent Solenoid Valve.
  2. Test for 10-30 Ω between the control terminal B or 1 and the B+ circuit terminal A or 2.
    • If not between 10-30 Ω 

      Replace the Q13 Evaporative Emission Vent Solenoid Valve.

    • Go to next step: If between 10-30 Ω 
  3. All OK.
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