Express 2500 V8-6.6L DSL Turbo (2010)
Bell Housing: Technical Service Bulletins
Drivetrain - Information Duramax Flywheel Housing Seals
INFORMATION
Bulletin No.: 10-06-01-004
Date: June 23, 2010
Subject: Information on Duramax Flywheel Housing Seals
Models:
2010-2011 Chevrolet Express
2011 Chevrolet Silverado 2500HD/3500 Series
2010-2011 GMC Savana
2011 GMC Sierra 2500HD/3500 Series
Equipped with 6.6L Diesel Engine RPO LGH or LML
Some vehicles equipped with the Duramax Diesel were involved in a mid year change. Some of the vehicles may have been built with a flywheel housing
that uses two different style seals; a left (2) and a right (1) one as installed.
On affected vehicles that need these seals replaced (for example; if coolant is leaking out of the rear cover), the left (as installed) seal is an orange O-ring
(2), GM P/N 94056175, and the right seal is a blue/green (1) press-in-place seal, GM P/N 12627895.
The machining of the flywheel housing for each style of seal is different and not cross compatible. If the flywheel housing is removed for service, replace
the seals with the appropriate part in the right area.
Parts Information
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