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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 937 (Engine Controls And Fuel - 4.3L - DTC P0340 To DTC P2138) >> DTC P0506 or P0507 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using a scan tool compare the desired engine idle speed to the actual engine idle speed.
    • Actual engine idle speed should be no greater than 90 RPM below desired.
    • Actual engine idle speed should be no greater than 90 RPM above desired.
  2. 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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