Express 3/4 Ton Van V8-4.8L VIN V (2003)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - False Start/MIL ON/DTC P0191 Set
Bulletin No.: 04-06-04-049
Date: June 30, 2004
TECHNICAL
Subject:
False Start with MIL Light On, P0191 (Reprogram PCM)
Models:
2003 Chevrolet Express
2003 GMC Savana
with CNG Option (RPO KL6, KL8)
Condition
Some customers may comment that their vehicle had a false start or start/stall with the MIL being illuminated. Some customers may not be able to start
the vehicle. Upon investigation, the technician may find a DTC P0191.
Correction
Reprogram the PCM with calibration operating system part number 52372987 or later.
The new calibration will be released beginning with TIS satellite data update version 4.0 for 2004, which includes TECH2(R) update version 24.001,
available April 2004. As always, make sure your TECH2(R) is updated with the latest software version.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer
