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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1647 (Engine Control System & Fuel System - 4.8L, 5.3L, 6.0L, 6.2L - DTC P1255 To DTC P3449) >> DTC P1682 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage
EC Ignition Relay Feedback Signal, Powertrain Relay P1682 P1682 P0690
Ignition 1 Voltage, Run/Crank Relay 1 1 2
1. A short to ground or open/high resistance will cause a No Crank condition.
2. A short to voltage will cause the engine to continue to run with ignition OFF.
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