Fuel System - SES Lamp ON/DTC P0463 Set
Bulletin No.: 05-06-04-075Date: December 15, 2005
TECHNICAL
Subject:
Fuel Gauge Incorrect or Inoperative and/or Service Engine Soon (SES) Lamp Illuminated with DTC P0463 Set (Inspect Secondary Fuel Level Sender Connection, Replace Primary Fuel Pump Module, If Necessary)
Models:
2005 Chevrolet Equinox - (Built Between and Including VIN Breakpoints 56140974-56157719)
2005 Saturn VUE - (Built Between and Including VIN Breakpoints 5S839683-5S844996)
Condition
Some customers may comment on an incorrect or inoperative fuel gauge or a Service Engine Soon lamp, with DTC P0463 set. An incorrect indication would typically be the indication of less than full when the tank is full (i.e. gauge indicates 3/4 tank when full).
Cause
This condition may be caused by intermittent or poor contact between the primary fuel pump connector and secondary fuel level sensor.
Correction
Disconnect the secondary fuel level sensor wire from the primary fuel pump module and inspect the connector for loose contacts.
If the connector has loose contacts, replace the primary fuel pump module.
Service Procedure
1. Remove the primary fuel pump module.
Important:
There are two 2-way connectors on the bottom side of the primary fuel pump module flange. The secondary fuel level sensor connector is the one that does NOT go to the fuel level sensor mounted on the primary fuel pump module.
2. Disconnect the fuel level sensor wire from the primary fuel pump module.
3. Inspect the connector for loose contacts. If it is possible to see straight through the connector (see left connector in illustration), then contact may be loose. Electrical contacts should fill the entire cavity, as shown in right connector in illustration. Check the terminal contacts using J 43907-100 gray probe tool (male), from J 43907 Connector Test Adapter Kit. If the probe tool is loose and will not be retained by the connector, the contacts are loose.
4. If the connector contacts are loose, replace the primary fuel pump module.
5. Verify that the customer concern has been resolved.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
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