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2004
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Avalanche 2500
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Repair and Diagnosis
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Different variant/trim
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Section 16 (Engine Control System - 4.8L, 5.3L & 6.0L (DTC P2121 To DTC U0107))
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Diagnostic Information and Procedures
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DTC P2121
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Conditions for Setting the DTC
Conditions for Setting the DTC
WARNING:
This page is about a different variant/trim than selected.
APP sensor 1 disagrees with APP sensor 2 by more than 10.5 percent.
The above condition is present for more than 1 second.