Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
EGR Valve Actuator: All Technical Service Bulletins
Emissions - EGR Valve Motor Availability/Service
Bulletin No.: 06-06-04-063C
Date: October 22, 2007
INFORMATION
Subject:
6.6L Duramax(TM) LBZ, LLY, LMM Diesel Engine EGR Valve Motor is Now Serviceable Separately from EGR Valve Assembly
Models:
2006-2008 Chevrolet Kodiak C4500/C5500 Series, Silverado, Silverado Classic Models
2006-2008 GMC Sierra, Sierra Classic Models, TopKick C4500/C5500 Series
with 6.6L Duramax(TM) Diesel Engine (VINs D, 2, 6 - RPOs LBZ, LLY, LMM)
Supercede:
This bulletin is being revised to add the 2008 model year and update the information. Please discard Corporate Bulletin Number 06-06-04-063B (Section
06 - Engine/Propulsion System).
The EGR Valve Motor is now serviceable separately from the EGR valve assembly. If published diagnostics indicate a concern with the motor, order
P/N 98057041.
The complete EGR valve assembly with the motor should be replaced if there is a concern with the EGR valve motor on the following models:
2006-2008 Chevrolet Express
2006-2008 GMC Savana
The EGR valve motor assembly (1).
There is no gasket between the motor and the valve.
Some vehicles may have a thin metal spacer between the motor and the valve that appears to be a gasket (1). This spacer is used to correct for production
variances in some valves and should be reinstalled with the new motor.
