C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
Fuel Injector Control Module: Customer Interest
Fuel System - Reduced Engine Power, MIL (Various Codes)
TECHNICAL
Bulletin No.: 09-06-04-034
Date: August 17, 2009
Subject: Malfunction Indicator Lamp (MIL) Illuminated, Fuel Injector Driver Circuit DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0207,
P0208 and Cylinder Bank Shut Down DTCs P2146 or P2149, Reduced Engine Power (Repair Fuel Injector Control Module (FICM) Harness Chafed
Wires)
Models:
2001-2004 Chevrolet Kodiak C4500/C5500 Series, Silverado Models
2001-2004 GMC Sierra Models, TopKick C4500/C5500 Series
Equipped with Duramax(TM) Diesel Engine RPO LB7
2004-2005 Chevrolet Kodiak, Silverado Models
2004-2005 GMC Sierra Models, TopKick
Equipped with Duramax Diesel Engine RPO LLY
Please Refer to GMVIS
Condition
Some customers may comment that the malfunction indicator lamp (MIL) is illuminated or intermittent and there is a significant reduction in engine
power (limp home mode).
The scan tool may display one or more Injector Driver Circuit DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0207 or P0208 and/or Cylinder
Bank Shut Down DTCs P2146 or P2149 set as Current or in History.
Cause
This condition may be caused by the fuel injector control module (FICM) wiring harness protective conduit rubbing against the back of the alternator,
the alternator bracket or the FICM harness retaining bracket. This may result in the conduit rubbing through, exposing the wires inside and chafing of the
wire insulation then occurs.
Correction
1. Turn ON the ignition, with the engine OFF.
2. Observe the DTC information with the scan tool.
3. If any of the above DTCs are set, then proceed to inspect the FICM wiring harness at the locations outlined in the following steps.
4. Turn OFF the ignition and all accessories and allow the control modules to power down.
Note
For Silverado and Sierra models only perform Step 5.
5. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement in SI.
Important
DO NOT break off the tab on the electrical connectors.
6. Disconnect the FICM electrical connectors (2) from the FICM (1).
