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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Engine Controls Self-Diagnostics) >> Diagnostic Tests >> DTC P0171: Fuel Trim System Lean >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 5

    If conditions were not corrected, see appropriate BASIC DIAGNOSTIC PROCEDURES article.
  2. 6

    If conditions were not corrected, a worn cam, worn intake or exhaust valves, or other engine mechanical failures may be at fault.