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Circuit/System Testing

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Refer to DTC B3794  before performing this diagnostic, if this code is set as current or history.
  1. Ignition OFF, disconnect the harness connector at the steering wheel control switch-left.
  2. Ignition ON, verify that a test lamp illuminates between the low reference circuit terminal 9 (Chevrolet) or 6 (Pontiac) and B+.
    • If the test lamp does not illuminate, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  3. If all circuits test normal, test or replace the steering wheel controls switch-left.