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Circuit/System Verification

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify proper engine oil level. Add oil as necessary.
  2. Ignition ON, observe the scan tool Engine Oil Level parameter. The reading should be OK and change to low when the oil level sensor/switch harness connector is disconnected.
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