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.





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