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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 4T65-E - DTC PO218 Through DTC P2534) >> DTC P1811 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The 1-2, 2-3, or 3-4 shift is longer than 0.65 second, twice in 1 trip.