Fuel Level Sensor Diagnostic Procedure - Daewoo Nubira Owner's Manual

Bulletin No.: TSB-005-01
Model(s): All
Date:
August 3, 2001
VIN Range: N/A
This bulletin supplements Technical Service Bulletin #TSB-004-01 "Fuel Level Sensor
Availability" which identified specific customer concerns related to Lanos, Nubira and Leganza
models that have experienced incorrect fuel gauge readings caused by a faulty Fuel Level
Sensor unit in the Fuel Tank.
To simplify the repair, an improved Fuel Level Sensor is now available as a separate
replacement part. It is no longer necessary to replace the complete Fuel Pump Module to
replace a faulty Fuel Level Sensor.
Included in this bulletin is a procedure for diagnosing the Fuel Level Sensor (commonly
referred to as a "Fuel Level Sending Unit") and the replacement procedure, if necessary,
which involves the partial disassembly of the Fuel Pump Module.
Note: Fuel Level Sensor units are not interchangeable between models.
CAUTION: Removing components from a sealed fuel system exposes fuel vapors to
outside oxygen and possible sources of combustion. The fuel system is
under pressure which must first be relieved to avoid possible spillage or
fire when removing system components. A fuel system should only be
opened when absolutely necessary, and only in a properly ventilated area
after the prescribed diagnostic procedures have determined that fuel
system components must be removed. Special caution should be used
when removing components from a fuel tank or fuel system. Removal of
such components should only be done by an experienced, certified
technician and away from open flame (torches, lit cigarettes, heater pilots
or other flames however minor) or sparks (mechanical, electrical or
otherwise) that could cause fuel vapors to ignite.

FUEL LEVEL SENSOR DIAGNOSTIC PROCEDURE:

Note: Ensure that the Ignition Switch is in the "OFF" position.
1. Remove the Rear Seat Cushion.
Lanos ONLY - Remove and retain the retaining bolt located at the front center of the Rear
Seat Cushion, then lift up the front edge of the cushion to release the two (2) retaining latches.
Nubira & Leganza - Lift up on the front edge of the Rear Seat Cushion to release the two
(2) retaining latches.
2. Remove the Rear Seat Bottom Cushion to gain access to the Fuel Tank.
3. Remove the Fuel Pump Module Access Cover.
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General Manager
Circulate To:
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Service Manager
TECHNICAL SERVICE BULLETIN
TECHNICAL SERVICE BULLETIN
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Technician(s)
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Service Advisor
Description: Fuel Level Sensor Procedures
Group: Engine
Reference: N/A
Prod. Dates: N/A
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Body Shop Manager
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Parts Manager