GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The powertrain interface module (PIM) receives information from the powertrain control module (PCM) on the Class II serial data circuit. This information contains the current fuel level and the status of this information, is either valid or invalid. If the PCM detects a problem with the fuel level sensor information it will set a DTC P0461, P0462 or P0463. If DTC P0461, P0462 or P0463 are set in the PCM, the status of the fuel level information sent to the PIM from the PCM will be invalid, this will cause DTC B0575 Fuel Level Indicator Circuit to be set.

Conditions for Running the DTC

    • The ignition is ON.
    • The ignition voltage is between 5 and 17 volts.

Conditions for Setting the DTC

PIM has received invalid fuel level sender information.

Action Taken When the DTC Sets

The Check Powertrain malfunction indicator light (MIL) will not be activated.

Conditions for Clearing the DTC

    • A Last Test Failed (current DTC) clears, after the ignition has been cycled and the PIM receives valid fuel level information.
    • The PCM receives the clear code command from the scan tool.

Diagnostic Aids

The following DTCs may also cause this DTC to set: PCM DTC P0461, P0462 or P0463. These PCM DTCs should be diagnosed first.

Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description

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

  1. This test confirms that the Powertrain OBD System Check has been performed.

  2. If DTCs U1000 or U1001 are set, these PIM DTCs should be diagnosed first.

  3. This test determines if any DTCs are stored in the PCM memory. To determine if a DTC is current, select "DTC Information / Failed This Ignition".

  4. This test confirms if the DTC is current.

DTC B0575 - FUEL LEVEL INDICATOR CIRCUIT

Step

Action

Value(s)

Yes

No

Schematic Reference: Instrument Cluster Schematics

1

Did you perform the Instrument Cluster Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Are powertrain interface module (PIM) DTCs U1000 or U1001 set?

--

Go to Diagnostic Starting Point - Data Link Communications in Data Link Communications

Go to Step 3

3

Are powertrain control module (PCM) DTCs P0461, P0462 or P0463 set?

--

Go to Diagnostic System Check - Instrument Cluster

Go to Step 4

4

  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

--

Go to Step 2

System OK