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Home >> Buick >> 2008 >> Allure Super >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449 >> DTC P3401, P3425, P3441, or P3449 >> Component Testing >> Notes

July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Testing: Notes

IMPORTANT: Perform the Circuit/System Testing first.

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