S10/T10 P/U 4WD V6-4.3L VIN X (1996)
Engine Control Module: Customer Interest
False DTC P0461, Fuel Level Sensor, Set in VCM
File In Section: 6E - Engine Fuel & Emission
Bulletin No.: 66-65-04
Date: April, 1996
Subject:
False DTC P0461, Fuel Level Sensor (Class D), Stored in VCM (Reprogram VCM)
Models:
1996 Chevrolet and GMC S/T Models with 4.3L Engine (VINs W, X - RPOs L35, LF6) Built Prior to the VIN Breakpoints:
Condition
Diagnostic Trouble Code (DTC) PO461 stored but no problem reported or found with the fuel gauge reading.
Cause
The Vehicle Control Module (VCM) program is incorrect.
Correction
Reprogram the VCM using the new calibration available on your Techline Terminal CD # 1 (1996) or later.
Service Procedure
1.
Use Tech 1 to check the calibration number.
2.
Vehicles with old calibration should be reprogrammed with new "FLASH" calibration following the Service Manual procedure in Section 6E,
Engine Controls.
Old Calibration
New Calibration
16235505
16237015
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor Time
J6355
Reprogram
Use Published Labor
EEPROM
Operation Time
Important:
Labor operation is coded to base vehicle coverage in the warranty system.
