Sierra 1500 2WD V6-4.3L (2008)
PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - MIL ON/DTC P1174 Set
TECHNICAL
Bulletin No.: 08-06-04-028
Date: April 28, 2008
Subject:
Service Engine Soon/Malfunction Indicator Lamp, DTC P1174 Fuel Trim Cylinder Balance Bank 1 (Reprogram ECM)
Models:
2008 Chevrolet Silverado
2008 GMC Sierra
with 4.3L Engine (VIN X - RPO LU3)
Condition
Some customers may comment that the Service Engine Soon (SES)/Malfunction Indicator Lamp (MIL) is illuminated. Technicians may find Diagnostic
Trouble Code (DTC) P1174 Fuel Trim Cylinder Balance Bank 1 set.
Cause
This condition may be caused by calibration sensitivity.
Correction
A revised calibration has been developed to address this condition. Technicians are to reprogram the Engine Control Module (ECM) using the Service
Programming System (SPS) with the latest software available on TIS2WEB. Refer to the Engine Control Module Programming and Setup (Gasoline
Engines) and Service Programming System (SPS) procedures in SI for more information. As always make sure your Tech 2(R) is updated with the latest
software version.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer
