LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 508 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0420 To DTC P3449 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Fuel Composition Diagnosis >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Record the scan tool Fuel Alcohol Content.
  2. Measure the ethanol content with a fuel sample from the fuel rail using the J 44175  Tester. The difference between the measured ethanol content and the scan tool Fuel Alcohol Content should be less than 17 percent.
    • If not within the specified range, continue with Circuit/System Testing.
scientia non olet · About LEMON Manuals