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.
- Verify that the following DTCs are not set: P003A, P0047, P0048, P0106, P0403, P0405, P0406, P046C, P02E2, P02E3, P02E7, P02E8, or P02E9.
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle
- Engine running at idle, observe the scan tool MAF Sensor parameter. The reading should be between 2,400-4,400 Hz depending on the ECT sensor 1.
- 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.