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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 13 (ENGINE CONTROL SYSTEM - 4.8L, 5.3L, AND 6.0L - DTC P0135 TO DTC P0451)DTC P0341TEST DESCRIPTION
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Test Description

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Test Description
WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3:  This step inspects for electromagnetic interference (EMI) on the CMP sensor circuits.
  2. 6:  Damage to the face of the sensor could indicate foreign material passing between the CMP sensor and the reluctor wheel. This condition would cause this DTC to set. Damage to the reluctor wheel would affect the CMP sensor output.
DTC P0341

Step Action Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 3  Go to Testing for Intermittent Conditions and Poor Connections
3 
  1. Visually and physically inspect all circuits going to the camshaft position (CMP) sensor for the following:
    • Being routed too close to secondary ignition wires or components
    • Being routed too close to aftermarket add-on electrical equipment
    • Being routed too close to solenoids, relays, and motors
  2. If you find incorrect routing, correct the harness routing.
Did you find and correct the condition?		 Go to Step 9  Go to Step 4 
4 Test for an intermittent and for a poor connection at the CMP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 9  Go to Step 5 
5 Test for an intermittent and for a poor connection at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 9  Go to Step 6 
6 
  1. Remove the CMP sensor. Refer to Camshaft Position (CMP) Sensor Replacement .
  2. Visually inspect the CMP sensor for the following conditions:
    • Physical damage
    • Excessive wear of the sensor
    • Loose or improper installation
    • The sensor coming in contact with the reluctor ring
    • Foreign material passing between the sensor and the reluctor ring
    • Wiring routed too close to secondary ignition components
Did you find and correct the condition?		 Go to Step 9  Go to Step 7 
7 Visually inspect the CMP sensor reluctor ring for the following conditions:
  • Physical damage
  • Excessive end play or looseness
  • Loose or improper installation

Refer to Camshaft and Bearings Cleaning and Inspection .
Did you find and correct the condition?		 Go to Step 9  Go to Step 8 
8 Replace the CMP sensor. Refer to Camshaft Position (CMP) Sensor Replacement .
Did you complete the replacement?		 Go to Step 9  -
9
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 2  Go to Step 10 
10 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.