Incorrect Fuel Gauge Readings (Reprogram VCM with Revised Calibration)
| Subject: | Incorrect Fuel Gauge Readings (Reprogram Vehicle Control Module with Revised Calibration) |
| Models: | 1998*-99 Chevrolet and GMC S/T Pickup and 2 Door Utility Models |
| 1998*-99 Isuzu Hombre |
| with 4.3L Engine (VINs W, X - RPOs L35, LF6) |
| *RPO ZN4 Only |
Built Prior to the Following VIN Breakpoints:
Plant | Division | VIN Breakpoint |
|---|---|---|
Linden | Chevrolet (Blazer) | XK162355 |
Linden | GMC (Pickup) | XK508493 |
Linden | GMC (Jimmy) | XK508505 |
Shreveport | Chevrolet | X8140835 |
Shreveport | GMC | X8512385 |
Shreveport | Isuzu (RPO ZN4 | W8668201-W8670669 |
Shreveport | Isuzu | X8650007-X8650733 |
Condition
Some owners may comment on incorrect fuel gauge readings.
The fuel gauge may read empty (E) with approximately 1/3 of a tank of fuel remaining, or the fuel gauge rarely reaches the full (F) mark when the fuel tank is filled.
Correction
Reprogram the vehicle control module (VCM) with the revised Fuel System Calibration. Use the appropriate calibration listed below. Refer to the latest Techline information for programming procedures.
Calibration Information
Calibration P/N (New) | Application |
|---|---|
09374032 (Fuel System Calibration) | S/T 100 (Pickup) &LF6/L35 |
09374033 (Fuel System Calibration) | S/T 100 (2 Door Utility) &L35 |
Important: These calibrations are not available from GMSPO. These calibrations are available on 1999 Techline CD ROM Disc 5 and later.
Warranty Information
For vehicle repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J6355 | Prom - Reprogramming (On Car) | Use published labor operation time |
