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Diagnostic Fault Information

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC P1682

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Ignition 1 (Powertrain Relay) P0689 P0689, P1682 P0690 -
Ignition 1 Voltage (Run/Crank Relay) - P1682 - -
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