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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls Self-Diagnostics - 4.3L >> Diagnostic Tests >> DTC P0171 & P0174: Fuel Trim System Lean - Bank 1 & 2 >> Test Description

Test Description

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.

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