2002 Buick Century CustomFACTORY OEM SERVICE PROCEDURE

Inspection/Maintenance EGR System Set Procedure: Description

The purpose of this test is to satisfy the enable criteria necessary to execute I/M readiness diagnostics for the EGR system. The test may be used to set I/M system Status indicators to YES. Ensure that vehicle meets the requirements in Conditions for Running Test before performing this test. Failure to meet necessary requirements may produce inaccurate test results.

Factory Service Tools

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Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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