Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
Fuel Injector Wiring Harness: All Technical Service Bulletins
Fuel System - Reduced Power/MIL ON/Multiple DTCs Set
TECHNICAL
Bulletin No.: 05-06-04-047C
Date: April 23, 2008
Subject:
Service Engine Soon (SES) Light On with Reduction in Engine Power, DTCs P0202 and P2149 or P0207 and P2146 or P1294 Set (Install Revised 90
Degree Injector Connector with Harness Support Bracket Service Kit)
Models:
2004-2005 Chevrolet Silverado
2004-2005 Chevrolet Kodiak C4500/C5500 Series
2004-2005 GMC Sierra
2004-2005 GMC Topkick C4500/C5500 Series
with 6.6L Duramax(TM) Diesel Engine (VIN 2 - RPO LLY)
Supercede:
This bulletin is being revised to add DTC P1294 to Subject Line and Condition Statement. Please discard Corporate Bulletin Number 05-06-04-047B
(Section 06 - Engine/Propulsion System).
Condition
Some customers may comment on the Service Engine Soon light becoming illuminated along with a severe reduction in engine power (limp home mode).
Upon investigation, the technician may find DTCs P0202 and P2149 or P0207 and P2146 or P1294.
Cause
The injector connector circuits on cylinders 2 and 7 are not fully supported near the connector and are more susceptible to terminal breakage from engine
vibration.
Correction
If published diagnostics lead to an injector connector install the revised 90 degree connector and the harness support bracket from the service kit P/N
98017958 using the following repair procedures.
Repair Procedure for Left Bank Cylinder Number 2
1.
Disconnect the negative battery cables. Refer to Service Information (SI) for the Battery Negative Cable Disconnect/Connect Procedure (Single
Battery) and Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery).
2.
Remove the left wheelhouse panel. Refer to Service Information (SI) for the Wheelhouse Panel Replacement.
3.
Remove the left charge air cooler inlet pipe. Refer to Service Information (SI) for the Charged Air Cooler Hoses/Pipes Replacement (Left).
