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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 931 (Engine Controls And Fuel - 6.6L (LMM) - DTC P0016 To DTC P0299) >> DTC P011A >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the DTCs P0117, P0118, P2184 or P2185 are not set.
  2. If the ignition has been OFF for 10 hours or more, the ECT sensor 1 and the ECT sensor 2 should be within 5°C (41°F) of each other, and also the ambient temperature. Turn ON the ignition, with the engine OFF, and use a scan tool to observe the ECT sensor 2 and the ECT sensor 1 parameters. Compare those sensor parameters to each other, and to the ambient temperature. A comparison between ambient temperature and the coolant temperature sensors will determine which ECT is skewed.
  3. A quick comparison between ECT sensor 1 and ECT sensor 2 can be made at any time to determine which sensor is skewed.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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