Service Engine Soon/Malfunction Indicator Lamp, DTC P1174 Fuel Trim Cylinder Balance Bank 1 (Reprogram ECM)
| 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
Do This | Don't Do This |
|---|---|
Update the ECM calibration. | Do NOT replace the catalytic converter, ECM, injectors, fuel rails or fuel pumps. |
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® is updated with the latest software version.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J6354 | Powertrain Control Module Engine Reprogramming with SPS | Use Published Labor Operation Time |
