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Old 04-23-2008, 02:08 PM   #21 (permalink)
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Originally Posted by MAX4X4 View Post
Go HERE and post for a VIN check.
Thanks MAX!
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Old 04-23-2008, 02:49 PM   #22 (permalink)
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There is also a big sticker on the passenger side frame rail that has the build date, but it's upside down. You'll have to flip the truck to read it.

2006 GMC Sierra 2500HD
6.6L Duramax Diesel LBZ / Allison 1000
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Old 04-23-2008, 03:19 PM   #23 (permalink)
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"The Double D": 2007 Chevy 2500HD Classic LT2, 6.6L LBZ, CC, LB, 2WD, Factory 16" Rims/Tires, Camper Mirrors (leveled ), ipac OEM, Factory Bose, XM, Onstar
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Old 04-23-2008, 03:27 PM   #24 (permalink)
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Originally Posted by fajitatone View Post
There is also a big sticker on the passenger side frame rail that has the build date, but it's upside down. You'll have to flip the truck to read it.

Haha thanks for the info
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Old 04-04-2011, 09:31 PM   #25 (permalink)
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Blew my head gaskets last week. .06 percent now have fail lol
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Old 04-04-2011, 11:43 PM   #26 (permalink)
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Old thread...but more of an interesting subject now, given the last 2 years...

Deters...what was your mileage.?

Also what kind of driving were you doing, mods etc.?

I too have build date in late 05. Am at 205,500k miles...so far so good but concerned as I know at some time it'll happen...preferrably after I win the/a/any flippin lottery...

(all mods - in my garage),
264,406 miles (423,050 km)..
orig: Injectors/cp3/HG's..

Pulling a 2011 Coachmen Chaparral
5TH Wheel - PullRight Super Glide 15K
(simply awesome hitch)

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Last edited by steakman; 04-04-2011 at 11:45 PM.
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Old 04-05-2011, 07:55 AM   #27 (permalink)
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My Mileage was around 98,000 no mods bone stock. I posted this old thread because it had the reference to the TSB in it. I thought it was water pump. Hope for trouble free after this.

Document ID# 1828826
2006 GMC Truck GMC C Sierra - 2WD
http://dieselplace.com/engif/000/999/999/999999995.gif Subject: Information on 6.6L LBZ, LB7, LLY Duramax Diesel Engine Cylinder Head Gasket Design Change - New Head Gasket Part Numbers and Head Bolt Torque Specifications #06-06-01-006A - (05/16/2006)

Models: 2001-2006 Chevrolet Silverado

2006 Chevrolet Express

2003-2006 Chevrolet Kodiak C4500/5500 Series

2001-2006 GMC Sierra

2006 GMC Savana

2003-2006 GMC Topkick C4500/5500 Series

with 6.6L Duramax Diesel Engine (VINs D, 1, 2 -- RPOs LBZ, LB7, LLY)

This bulletin is being revised to update model years and model usage. Please discard Corporate Bulletin Number 06-06-01-006 (Section 06 -- Engine/Propulsion System).
A mid-year design change was made to the head gasket of the 2006 Duramax Diesel engine in December, 2005. This second generation gasket will service all 2001-2006 vehicles, including those with engines built using first generation gaskets. The second generation gasket will require a lower head bolt torque angle specification as well as special cleaning methods of the gasket surfaces.
Gasket Identification

The second generation gasket can be visually identified by its riveted construction, as opposed to the crimped design of the first generation gasket.
Second Generation Head Gasket (Riveted Construction)

http://dieselplace.com/tif.gif (http://dieselplace.com/servlets/RetrieveTif?pic=1743169)
Refer to the above illustration number (1) showing riveted construction.
First Generation Head Gasket (Crimped Construction)

http://dieselplace.com/tif.gif (http://dieselplace.com/servlets/RetrieveTif?pic=1743166)
Refer to the above illustration number (1) crimped construction.
Special Cleaning Requirements

For 2001-2006 vehicles produced with the first generation head gasket, special attention must be given to the cleaning of the engine block and cylinder head surfaces when servicing with a second generation gasket. The crimped areas (1) on the first generation gasket may, over time, allow corrosion buildup where they contact the block and cylinder head surfaces. The second generation gasket has raised ribs that seal at these crimped areas (1). A special cleaning procedure is required to ensure proper sealing.
Cleaning Procedure

Remove the old head gasket using service manual procedures. Save the gasket for reference until the repair is completed.
Place clean rags in the cylinder bores and pushrod openings in order to keep out debris.
Use the J-28410 or equivalent to carefully clean the gasket sealing surface of large sealing or corrosion matter. When scraping, take care not to scratch or gouge the metal surfaces. Do not push the debris into oil, coolant, and combustion openings or bolt holes.
Inspect the gasket sealing surfaces for corrosion, especially in the areas that were in contact with the crimped tabs of the first generation head gasket. If corrosion is present, continue with the rest of the steps in this procedure for proper cleaning. If the sealing surface is sufficiently clean and smooth, use the revised torque specification listed towards the end of this bulletin and continue with published service manual procedures to complete the repair.
For surfaces that have corrosion or pitting, wrap a piece of flat steel (4"x 2" or larger) with 600 grit wet grade sand paper. Using Moisture Displacing Lubricant, P/N 1052864 (in Canada, use 89020803) or equivalent, wet sand the block surface to remove any remaining gasket material or corrosion. Do not use any paper coarser than 600 grit. Notice: • Do not use any power type sanding devices.
• Do not use a wire brush or wheel to clean gasket surfaces.
• Do not use chemical cleaning agents on gasket surfaces.

Take care to keep the sanding block parallel to the block surface and evenly sand the sealing surface. Some areas of corrosion will still show a stain. Do not attempt to wet sand these areas down to a shiny metal surface.
Change the sanding paper when it becomes clogged. Carefully and frequently wipe the surface, using a clean cloth each time, to prevent sanding debris from building up and contaminating the oil and coolant cavities.
Clean the bolt threads and holes and remove the rags from the bore cavities and pushrod openings.
Repeat the above cleaning procedure on the cylinder head gasket surface.
Clean the engine block and cylinder head gasket surfaces with Brake Parts Cleaner, P/N 12378556 (in Canada, use 88901247) or equivalent, to remove any traces of oil or debris.
Using the revised head bolt torque specification below, reassemble the engine with NEW M12 cylinder head bolts according to service manual procedures. Torque Specification Change

The second design head gasket requires a lower torque angle specification for the M12 bolts than the torque required by the first generation gasket. The M8 bolt torque remains the same for both designs. The M12 bolts on engines using the second generation head gasket should be torqued using the angular tightening method to the following specifications:
M12 Bolt
1st Step
50 Nm (37 lb ft)
2nd Step
80 Nm (59 lb ft)
3rd Step
60 Degrees
4th Step
60 Degrees
M8 Bolts
25 Nm (18 lb ft)
Important: SI will be updated with the revised torque specification.
Parts Information

(http://dieselplace.com/forum/#ss3-1828826) Part Number
Gasket, Cyl Hd, (Grade A) - RH
Gasket, Cyl Hd, (Grade B) - RH
Gasket, Cyl Hd, (Grade C) - RH
Gasket, Cyl Hd, (Grade A) - LH
Gasket, Cyl Hd, (Grade B) - LH
Gasket, Cyl Hd, (Grade C) - LH
Warranty Information

(http://dieselplace.com/forum/#ss4-1828826) For vehicles repaired under warranty, use:
Labor Operation
Labor Time
Gasket, Cylinder Head - Both Banks - Replace
Use Published Labor Time

Last edited by sdeters; 04-05-2011 at 08:21 AM.
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Old 04-24-2011, 12:29 PM   #28 (permalink)
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Is there pictures of these gaskets somewhere? The links above do not work....


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Old 04-24-2011, 11:33 PM   #29 (permalink)
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Anyone happen to know exactly when they switched to the new gaskets?

Mine was built on 12/12/05. I have had the low coolant a few times, but no coolant smell.

I'll be out of the 100k warranty in September, and I only put about 4-5k miles/ year on my truck.
2006 Chevrolet 4wd 2500, CC/SB, Duramax LBZ/Allison 6 speed, LT1, Blue Granite Metallic, 07+ LED Cab lights, MM Wheels/ Cooper STT 285's, LINE-X, Monroe Reflex shocks, Ebay shock extenders, and more, MBRP 5" turbo back exhaust (Thanks PTP)!!!

39k miles/ 6 years old
First GM, First Diesel.

2005 Toyota Sienna LE (Wife's)
2003 Toyota Corolla CE 5 speed
2009 Keystone Copper Canyon 5'er

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Old 05-16-2011, 05:44 PM   #30 (permalink)
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im currently looking at an 06 with a build date of 10-14-05 its got roughly 60k miles on it, if im opt to purchase the extended warranty, will it cover the head gaskets? also should i be concerned? it is a carfax one owner vehicle.
00 Ram 1500 4x4 5.2 mildly modded
LTB 06-07 classic LBZ CC/LB 4x4

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