Circuit/System Verification

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.

Verify that DTCs P003A, P0047, P0048, P0087, P0101, P0201-P0208, P02A1, P02A5, P02A9, P02AD, P02B1, P02B5, P02B9, P02E0, P02E7-P02E9, P029D, P0234, P0299, P0300-P0308, P0401, P0402, P046C, P0545, P0546, P0698, P0699, P2032, P2033, P2269, P2453, or P2563 are not set.
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Verify the correct DPF is installed on the vehicle by performing the following:
1. Record the DPF part number from the DPF shell.
2. Observe the vehicle information system (VIS) RPO list for the RPO ZK3.
3. The application of RPO ZK3 should match the application of the part number on the DPF shell, as listed below:
  - With RPO ZK3, the last 3 digits on the DPF shell are 221.
  - Without RPO ZK3, the last 3 digits on DPF should be 508.
- If the DPF shell part number does not match the RPO application, replace the DPF with the correct part.
Engine running at a warm stabilized idle, observe the scan tool Particulate Filt. Pressure Variance parameter. The value should be between 0-3 kPa.
Verify the following scan tool parameters:
- Engine Run Time Since Last DPF Regeneration parameter-The value should be less than 17.5 hours.
- Fuel Used Since Last DPF Regeneration parameter-The value should be less than 213 liters (57 gallons).
- Distance Since Last DPF Regeneration parameter-The value should be less than 804 kilometers (500 miles) at sea level, or less than 603 kilometers (375 miles) when equal to or above 5,000 feet altitude.
- If any of the parameters are greater than the specified range, perform a DPF Service Regeneration. Refer to Diesel Particulate Filter (DPF) Service Regeneration .
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.