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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1655 (Engine Control System & Fuel System - Hybrid (Hp2) 6.0L (LZ1) - DTC P1380 To DTC P3449) >> DTC P2227 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine idling, move the related harnesses/connectors at the BARO sensor and at the ECM while observing the scan tool BARO sensor parameter. The scan tool BARO parameter should be steady.
    • If the parameter does not perform as specified, repair the harness/connectors as necessary.
  2. If all circuits test normal, test or replace the BARO sensor.
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