LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1374 (Engine Controls And Fuel - 4.8L, 5.3L, 6.0L, 6.2L - DTC P0230 To DTC P0690) >> DTC P0351-P0358 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the engine running, monitor the Cylinder 1-8 IC Circuit Status parameters with a scan tool.
    • If a short to GND or Open status test displays FAULT, test for an open/high resistance or short to ground on the affected IC circuit terminal C.
    • If a short to volts status test displays FAULT, test for a short to voltage on the affected IC circuit terminal C.
    2. IMPORTANT: A high resistance on any IC circuit can cause a misfire condition before DTCs P0351-P0358 set.
  2. Exchange the affected ignition coil/module with the ignition coil/module of a cylinder that is not affected.
  3. Start and run the engine. With a scan tool, monitor the IC circuit parameters and the Misfire Current counters.
    • If the circuit status fault identified or the misfire transfers with the ignition coil/module, replace the ignition coil/module assembly.
    • If the circuit status fault identified or the misfire does not transfer with the ignition coil/module, replace the ECM.
scientia non olet · About LEMON Manuals