12-06-01-007A

File in Section:
Service Bulletin
06 - Engine
Bulletin No.:
12-06-01-007A
Date:
February, 2013
INFORMATION
Subject:
New Service Cam Bearings For Gen IV V8 Engines
Models:
2005-2007 Buick Rainier
2007-2013 Cadillac CTS-V
2007-2013 Cadillac Escalade, Escalade ESV, Escalade EXT
2006-2007 Chevrolet Monte Carlo SS
2006-2009 Chevrolet Impala SS
2007-2009 Chevrolet TrailBlazer SS
2007-2013 Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe
2007-2013 Chevrolet Express
2008-2013 Chevrolet Corvette, Corvette Grand Sport, Corvette ZR1, Z06
2009-2012 Chevrolet Colorado
2010-2013 Chevrolet Camaro
2007-2009 GMC Envoy
2007-2013 GMC Sierra 1500, Sierra Denali, Yukon, Yukon XL, Yukon Denali,
Yukon Denali XL
2007-2013 GMC Savana
2009-2012 GMC Canyon
2006-2008 Pontiac Grand Prix, GXP
2008-2009 Pontiac G8 GT
Equipped with Gen IV V8 Engine Except Hybrid (LFA, LZ1)
This bulletin is being revised to clarify the title of the first part information table. Please
discard Corporate Bulletin Number 12-06-01-007 (Section 06 – Engine/Propulsion System).
New service cam bearings for Gen IV V8 engines have
been released.
When replacing cam bearings, replace all five cam
bearings with the newly released service parts. The
new cam bearings have a polymer coating and will
appear different. The bearing surface looks black due
to the coating.
Note: If the black coating wears off, it does not mean
that the bearing is bad. There is still a lead lining
material underneath. If the lining is damaged or worn
beyond specifications, then replacement would be
required.
The maximum cam journal to bearing oil clearance of
0.005 inch (0.127 mm) with the service bearings
installed on engines with AFM or CMP.
The maximum cam journal to bearing oil clearance of
0.006 inch (0.152 mm) with the service bearings
installed on engines without AFM or CMP.
2859869
Copyright 2013 General Motors LLC. All Rights Reserved.
Page 2
February, 2013
All Aluminum Blocks and Iron Blocks
with First Design Camshafts
Bulletin No.: 12-06-01-007A
Second Design Camshaft with Iron
Block Only Late 2009 to Present
Part Number
Description
Part Number
Description
19260874
Replaces P/N 19167383 – Position #1
and #5
2005-2013 Gen IV Engines with
Aluminum Block
2007-2009 Gen IV Engines with Iron
Block and First design Camshaft
19260877
Replaces P/N 19167383 Position #1
and #5
2009 1/2-2013 Gen IV Engines with
Iron Block and Second Design
Camshaft
19260878
19260875
Replaces P/N 19167382 – Position #2
and #4
2005-2013 Gen IV Engines with
Aluminum Block
2007-2009 Gen IV Engines with Iron
Block and First Design Camshaft
Replaces P/N 19167382 Position #2
and #4
2009 1/2-2013 Gen IV Engines with
Iron Block and Second Design
Camshaft
19260879
Replaces P/N 19167218 Position #3
2009 1/2-2013 Gen IV Engines with
Iron Block and Second Design
Camshaft
19260876
Replaces P/N 19167218 Position #3
2005-2009 Gen IV Engines with
Aluminum Block
2007-2009 Gen IV Engines with Iron
Block and First Design Camshaft
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor Time
J0846
Camshaft Bearing
Replacement
Use
Published
Labor
Operation
Time
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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