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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System - 4.8L, 5.3L & 6.0L (DTC P2121 To DTC U0107)) >> Diagnostic Information and Procedures >> DTC P2636 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The PCM does not detect a change of 4 L (1.06 gal) in both the primary and secondary fuel level sensors with the secondary pump commanded ON for 120 seconds.

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