MIL Lamp Illuminates with No Driveability Concerns, DTC P0172 (Reprogram PCM)
| Subject: | Malfunction Indicator Lamp (MIL) Illuminates Intermittently With No Driveability Concerns (Reprogram PCM) |
| Models: | 1998 Chevrolet Venture |
| 1998 Oldsmobile Silhouette |
| 1998 Pontiac Transport/Montana |
| with 3.4 L Engine (VIN E -- RPO LA1) |
Condition
Some owners may comment on an intermittent illuminated MIL with no driveability concerns experienced. Upon checking, a Diagnostic Trouble Code (DTC) P0172, Fuel Trim System Rich Bank 1, may be found. Service Information Manual diagnosis tables may lead to "notes on intermittents".
Cause
Values within the PCM calibration may cause a DTC P0172 to set when the vehicle is operating per design and intent.
Correction
A revised calibration has been released to correct this concern. Reprogram the PCM using the appropriate calibration.
Parts Information
Part Number | Description |
|---|---|
9384504 | Federal -- Canada (Short) UN |
9384514 | Federal -- Canada (Long) UM |
9384524 | California (UN) |
9384534 | California (UM) |
The calibrations listed are electronic calibrations and are NOT available from GMSPO. Calibrations will be available from Techline starting August 1999, on the TIS 2000 Disc 17 CD ROM.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J6355 | Prom - Reprogramming, On Car | Use Published Labor Time |
