Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE: If the P2067 or P2068 DTC is also present, diagnose and repair those DTCs before continuing with this test procedure.
1. Start the engine and allow the engine to reach normal operating temperature.
  NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.
2. With the scan tool, read DTCs.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
FUEL LEVEL SENSOR CIRCUIT DTCS SET IN THE BCM
Are any Fuel Level Sensor Circuit DTCs set in the BCM?

Yes
- Diagnose the appropriate Fuel Level Sensor Circuit DTC in the BCM. Refer to DIAGNOSTIC CODE INDEX .
No
- Go To 3
VISUALLY INSPECT FUEL TANK
1. Visually inspect the Fuel Tank for damage that may restrict the Secondary Fuel Level Sensor float from moving.
  Was damage found to the Fuel Tank?
  
  Yes
  - Replace the Fuel Tank in accordance with the Service Information. Refer to TANK, FUEL, REMOVAL
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
INTERNAL INSPECTION OF THE FUEL TANK
WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury.
1. Remove the Fuel Tank in accordance with the Service Information. Refer to TANK, FUEL, REMOVAL .
2. Remove the Secondary Fuel Pump Module. Refer to REMOVAL .
3. Visually inspect the inside of the Fuel Tank for any obstructions or deformities.
4. Inspect the Secondary Fuel Pump Module siphon tube and Float arm for damage.
  Were any problems found?
  
  Yes
  - Repair or replace as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
POWERTRAIN CONTROL MODULE (PCM)
1. Replace the Secondary Fuel Pump Assembly.
2. With the scan tool, erase DTCs.
3. Start the engine and allow the engine to reach normal operating temperature.
  NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.
4. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Repair is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .