Tsb Details?

krww06 · December 4, 2007

I've already looked in the Wiki area and can't seem to find one of the specific TSB's that is out for my GMT-900. Does anyone know a source where I can get the exact description/wording that's contained in a particular TSB? FWIW, the one I'm interested in is titled "Engine - Oil Leak From Rear Cover Assembly Area." I think it's TSB #05-06-01-034E. TIA.

jrrod2004 · December 4, 2007

I've already looked in the Wiki area and can't seem to find one of the specific TSB's that is out for my GMT-900. Does anyone know a source where I can get the exact description/wording that's contained in a particular TSB? FWIW, the one I'm interested in is titled "Engine - Oil Leak From Rear Cover Assembly Area." I think it's TSB #05-06-01-034E. TIA.

Here you go:

Document ID# 1903316

2007 Chevrolet Silverado - 2WD

Subject:5.3L LC9, LS4, L33, LH6, LM4, 5.7L LS1, LS6, 6.0L LS2, L76, 6.2L L92, 7.0L LS7 - Engine Oil Leak at Rear Cover Assembly Area (Engine Block Porosity RTV Repair Procedure) #05-06-01-034E - (02/12/2007)

Models:2004-2007 Buick Rainier

2005-2007 Cadillac CTS-V

2007 Cadillac Escalade, Escalade ESV, Escalade EXT

2003-2007 Chevrolet Corvette, TrailBlazer

2004-2006 Chevrolet SSR

2005-2007 Chevrolet Silverado, Silverado SS

2006-2007 Chevrolet Impala SS, Monte Carlo SS, TrailBlazer SS

2007 Chevrolet Avalanche, Suburban, Tahoe

2003-2007 GMC Envoy, Sierra

2004-2005 GMC Envoy XUV

2007 GMC Yukon XL, Yukon Denali, Yukon XL Denali

2004-2006 Pontiac GTO

2005-2007 Pontiac Grand Prix GXP

2005-2007 Saab 9-7X

with 5.3L, 5.7L, 6.0L, 6.2L, 7.0L VORTEC? GEN III or GEN IV V8 Engine (RPOs LC9, LS4, L33, LH6, LM4, LS1, LS6, LS2, L76, L92, LS7)

This bulletin is being revised to update warranty information. Please discard Corporate Bulletin Number 05-06-01-034D (Section 06 -- Engine/Propulsion System).

Condition

Some customers may comment on an engine oil leak.

Cause

Upon initial diagnosis, it may be determined that the leak is coming from the rear cover gasket. This condition may be caused by engine block porosity on the sealing surface. This issue pertains to aluminum block applications only.

Correction

Follow the steps for Oil Leak Diagnosis in SI to determine the source of the leak. If the leak has been diagnosed as coming from the engine rear cover assembly, refer to Engine Rear Cover Replacement in SI and remove the engine rear cover assembly. Inspect for engine block porosity where the engine rear cover mates to the engine block. If porosity is found anywhere on the sealing surface, use the following procedure to apply RTV to repair the engine block porosity. Refer to the illustration below.

Important: Clean any residual oil from the block and cover before applying the sealant in the next step.
Wipe a small amount of RTV, P/N 12378521 (in Canada, use P/N 88901148), onto the surface using a plastic scraper to fill the porosity.
Remove any excess RTV material, especially from inside the high pressure oil passage. Refer to #1 in the above illustration.
The joint may be closed immediately after applying the RTV. Total joint time after the RTV has been applied must be under 20 minutes.Important: Refer to Engine Rear Cover Replacement in SI and follow the tightening specifications and sequence.
Reinstall the engine rear cover using a new gasket and a new crankshaft rear main seal. Refer to Engine Rear Cover Replacement in SI.

Parts Information

Important: For Saab (U.S.) only, use P/N 12345795, Engine Oil Dye (U.S.), or equivalent.

Part Number

Description

Qty

12574293

Gasket - Crankshaft Rear Oil Seal Housing

1

89060436

Seal, Crankshaft Rear Main

1

12378521 (U.S.)

88901148 (Canada)

Sealant

1

12345795 (U.S.)

Dye, Engine Oil

1

10953470 (Canada)

Dye, Engine Oil

1

Warranty Information

Excluding Saab U.S. Models

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

J7510*

Oil Leak -- Rear Cover Area -- Porosity Repair

CTS-V

5.5 hrs

Corvette

- M/T

- A/T

5.9 hrs

5.4 hrs

SSR

5.4 hrs

TrailBlazer/Envoy/Rainier/Saab 9-7X (Canada)

- 2WD

- 4WD

5.7 hrs

6.5 hrs

GTO

- M/T

- A/T

10.2 hrs

10.5 hrs

Grand Prix/Impala/Monte Carlo

5.7 hrs

Silverado//Sierra Models

- M/T

- A/T

4.5 hrs

5.5 hrs

Avalanche, Escalade, Suburban, Tahoe, Yukon Models

4.5 hrs

Add

With skid plate

0.2 hr

With HP2**

0.5 hr

To clean parts over 48,000 km (30,000 mi)

0.1-0.3 hr

* This labor operation is for bulletin use only. It will not be published in the Labor Time Guide.

** HP2 Hybrid Propulsion Electric, AHS2

Saab U.S. Models

For vehicles repaired under warranty, use:

Labor Operation

Description

Failed Object

Fault/Reason Code

Location Code

Warranty Type

Repair/Action Code

Labor Time

2161901

Replace part, Seal, End Plate V8 T-Truck

21619

57

0

01

6.5 hrs

Add

9821001

R&R Anti-Submarine (Skid) Plate

--

0.2 hr

Add

To clean parts over 48,000 km (30,000 mi)

--

0.1 to 0.3 hr in 99 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.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Document ID# 1903316

2007 Chevrolet Silverado - 2WD

krww06 · December 4, 2007

M. Cueva, thank you VERY much!

sno · December 4, 2007

Am I understanding this correctly.... They are having techs repair casting flaws with RTV?

jrrod2004 · December 4, 2007

yeah from what it looks like.......

krww06 · December 5, 2007

Am I understanding this correctly.... They are having techs repair casting flaws with RTV?

What do you think my odds are of getting a new motor out of this? RTV is only a temporary fix, regardless of what GM may say.

Triki_Dick · December 5, 2007

Unless your motor is leaking, slim to none.

sno · December 5, 2007

I thought Ford was bad, but wow!

I'd agree with Triki Dick that you'll probably have little luck getting a replacement block. But, if you want to scream & yell loud and long enough... maybe the 'squeeky wheel' will get some grease.

krww06 · December 5, 2007

Unless your motor is leaking, slim to none.

FWIW, it is leaking in this area. The bell housing and stabilizer/sway bar both have oil on them. There is also oil on the floor in the morning. It's in the shop right now, so we'll see what they say.

'94 9c1 novice · January 12, 2008

Unless your motor is leaking, slim to none.

FWIW, it is leaking in this area. The bell housing and stabilizer/sway bar both have oil on them. There is also oil on the floor in the morning. It's in the shop right now, so we'll see what they say.

What happened with this? I've got a 2002 Sierra and it's leaking oil too. I took the lower control arm crossmember off and could see oil leaking from the middle of the top of the oil pan on the passenger side but couldn't see any higher to determine exactly where it's coming from.

jrrod2004 · January 12, 2008

Not sure if you have the 6 or the 8, but here you go:

Document ID# 2042661

2002 GMC Truck GMC C Sierra - 2WD

Subject:60 Degree V6 Engine Oil Leak at Crankshaft Front Oil Seal (Use New Crankshaft Front Oil Seal Installer Tool EN-48869) #07-06-01-023 - (12/05/2007)

Models:1986-2008 GM Passenger Cars and Light Duty Trucks (including Saturn)

with 2.8L, 3.1L, 3.4L, 3.5L or 3.9L 60 Degree V6 Engine

(VINs D, E, F, J, K, L, M, N, R, S, T, V, W, X, Z, 1, 3, 8, 9, W, R --

RPOs LG6, LA1, LNJ, LG8, LL1 or LX9, L82, LL2, LB8, LHO, LG5, LB6, LE2 or LQ1, LH7, LC1, L44, LZ4, LZE, LZ9, LGD, LZ8, LZG)

Important: This bulletin does not apply to 2004-2007 Saturn VUE models with 3.5L DOHC V6 Engine (VIN 4 - RPO L66) or 2005-2008 Cadillac CTS with 2.8L HFV6 Engine (VIN T - RPO LP1).

Important: This bulletin only applies to 60 degree V6 engines. Some of the discontinued 60 degree V6 engine VINs and RPOs may have carried over to other new model year engines and may no longer be a 60 degree V6 engine. So this bulletin may not apply. It is very important to verify that the following information is correct before using this bulletin:

• Year of vehicle (e.g. N = 1992)

• V6 Engine Liter size (e.g. 3.4L)

• VIN CODE (e.g. X)

• RPO (e.g. LQ1)

If ALL the information from the vehicle (year, size, VIN Code, RPO) you're working on can be found under the models listed above, then this bulletin applies to that engine. If one or more of the vehicle's information can NOT be found under the models listed above, then this bulletin does NOT apply.

Condition

Some customers may comment on external oil leakage.

Correction

Important: Before replacement of the crankshaft front oil seal, be sure the PCV system is operating correctly.

Tools Required

Important: TOOLS WERE SHIPPED TO YOUR DEALERSHIPS. IF YOU HAVE NOT RECEIVED THEM OR THEY ARE LOST, PLEASE CALL GM SPECIAL SERVICE TOOLS AT 1-800-GM-TOOLS.

The EN-48869 has a unique design to allow the technician to easily install the front crankshaft seal squarely to the correct depth and direction. Before proceeding with installation, review the illustration below to become familiar with the tool.

EN-48869 Crankshaft Front Oil Seal Installation Tool

Installer Body
Bearing
Washer
Drive Nut
Force Screw

Removal Procedure

Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement in SI.

Important: Use care not to damage the engine front cover or nick the crankshaft.
Remove the crankshaft front oil seal (1) using a suitable tool.

Installation Procedure

Lubricate the inside of the crankshaft front oil seal (1) with clean engine oil. Then install the seal to the installer body (2).
Align the oil seal and installer body (1) with the engine front cover and crankshaft.

Important: Before installing the force screw, apply a small amount of the Extreme Pressure Lubricant J 23444-A, provided in the tool kit, to the force screw.
Install the drive nut (4) onto the threaded force screw shaft (5), washer (3), and bearing (2). Then install to the installer body (1) and tighten the force screw to the crankshaft by hand.
Using a wrench, turn the drive nut on the threaded force screw shaft (2), this will push the seal into the engine front cover.
Continue to turn the drive nut (2) with the wrench until the installer body (1) is snug and flush against the engine front cover.
Loosen and remove the drive nut from the threaded force screw shaft, washer, bearing, and installer body. Verify that the seal has seated properly, flush against front cover flange (1).
Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement in SI.
Inspect for proper fluid levels.
Inspect for leaks.

Parts Information

Part Number

Description

Qty

10243247

Seal, Crankshaft Front Oil

1

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

J0750

Seal, Timing Cover Oil Replace

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.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Document ID# 2042661

2002 GMC Truck GMC C Sierra - 2WD

jrrod2004 · January 12, 2008

Document ID# 2023408

2002 GMC Truck GMC C Sierra - 2WD

Subject:Engine Oil Leak at Crankshaft Rear Main Oil Seal (Install Revised Crankshaft Rear Main Oil Seal Using Revised Rear Main Seal Installer and Remover Tools) #05-06-01-019F - (10/02/2007)

Models:1986-2008 GM Passenger Cars and Light Duty Trucks (including Saturn)

with 60 Degree V6 Engine 2.8L, 3.1L, 3.4L, 3.5L or 3.9L

(VINs D, E, F, J, K, L, M, N, R, S, T, V, W, X, Z, 1, 3, 8, 9, W, R --

RPOs LG6, LA1, LNJ, LG8, LL1, LX9, L82, LL2, LB8, LHO, LG5, LB6, LE2, LQ1, LH7, LC1, L44, LZ4, LZE, LZ9, LGD, LZ8, LZG)

This bulletin is being revised to add an Important statement on proper seal installation. Please discard Corporate Bulletin Number 05-06-01-019E (Section 06 -- Engine/Propulsion System).

Important: This bulletin only applies to 60 degree V6 engines. Some of the discontinued 60 degree V6 engine VINs and RPOs may have carried over to other new model year engines and may no longer be a 60 degree V6 engine. So this bulletin may not apply. It is very important to verify that the following information is correct before using this bulletin:

• Year of vehicle (e.g. N = 1992)

• V6 Engine Liter size (e.g. 3.4L)

• VIN CODE (e.g. X)

• RPO (e.g. LQ1)

If ALL the information from the vehicle (year, size, VIN Code, RPO) you're working on can be found under the models listed above, then this bulletin applies to that engine. If one or more of the vehicle's information can NOT be found under the models listed above, then this bulletin does NOT apply.

Important: This bulletin does not apply to 2004-2007 Saturn VUE models with 3.5L DOHC V6 Engine (VIN 4 - RPO L66) or 2005-2008 Cadillac CTS with 2.8L HFV6 Engine (VIN T - RPO LP1).

Condition

Some customers may comment on external oil leakage.

Correction

Important: Before replacement of the new design crankshaft rear main oil seal, be sure the PCV system is operating correctly.

Notice: The new seal described below comes with a protective nylon sleeve already installed in the seal. This sleeve assures that the seal is installed in the correct direction and also protects the seal from getting damaged during installation. Do not remove the protective sleeve from the seal; if removed, the installation tool (EN-48108) will not work.

A new design crankshaft rear main oil seal and installation tool (EN-48108) has been released. This seal incorporates features that improve high mileage durability. Replace the crankshaft rear main oil seal with the new design rear main oil seal, P/N 12592195, using the following service procedures.

Tools Required

Important: TOOLS WERE SHIPPED TO YOUR DEALERSHIPS. IF YOU HAVE NOT RECEIVED THEM OR THEY ARE LOST, PLEASE CALL GM SPECIAL SERVICE TOOLS AT 1-800-GM-TOOLS.

EN-48108 Rear Main Oil Seal Installation Tool

This tool has a unique design to allow the technician to easily install the rear main seal squarely to the correct depth and direction. Before proceeding with installation, review the above illustration to become familiar with the following components:

Mandrel
Drive Drum
Drive Nut
Washer
Bearing

EN-48672 Rear Main Oil Seal Remover Tool

This tool has a unique design to allow the technician to easily remove the rear main seal without nicking the crankshaft sealing surface when removing the seal. Before proceeding with removal, review the above illustration to become familiar with the following components:

Removal Plate
Threaded Adjustment Pins and Jam Nuts
Force Screw
#2 Self Drill Screws 38 mm (1.5 in) long 8 needed
Extreme Pressure Lubricant

Removal Procedure

Remove the transmission. Refer to Transmission Replacement in SI or the appropriate Service Manual.
Remove the engine flywheel. Refer to Engine Flywheel Replacement in SI or the appropriate Service Manual.
Install the removal plate (2) and both threaded adjustment pins and jam nuts (1) into the back of the crankshaft flange and secure the plate with adjustment pins and jam nuts.
Install #2 Self Drill Screws 38 mm (1.5 in) long, eight needed, (1) and tighten down flush to the plate.

Important: Before installing the force screw, apply a small amount of the Extreme Pressure Lubricant J 23444-A, provided in the tool kit.
Install the force screw (1) and back off both jam nuts (2) and continue to turn the force screw (1) into the removal plate to remove the seal from the crankshaft.

jrrod2004 · January 12, 2008

Once the seal is removed from the crankshaft, remove and save all eight screws and discard the old seal.

Notice: Clean the crankshaft sealing surface with a clean, lint free towel. Inspect the lead-in edge of the crankshaft for burrs or sharp edges that could damage the rear main oil seal. Remove any burrs or sharp edges with crocus cloth or equivalent before proceeding.

Installation Procedure

Notice: Do not remove the protective nylon sleeve from the new rear main seal prior to installation. The EN-48108 is designed to install the rear main seal with the protective sleeve in place. Never apply or use any oil, lubricants or sealing compounds on the crankshaft rear main oil seal.

Align the mandrel dowel pin (EN-48108) to the dowel pin hole in the crankshaft. Refer to the above illustration.
Using a large flat-bladed screwdriver, tighten the two mandrel screws to the crankshaft. Ensure that the mandrel is snug to the crankshaft hub. Refer to the above illustration.

Important: Different types (styles) of rear main seals were used in production in different model years, engines and manufacturing facilities. As a result, the NEW style rear main seal that you will be installing may have a different appearance or shape than the one removed. Regardless of what type of seal was removed and what side was facing outside the engine, the new seal must be installed as described. Upon close inspection of the outer lip on the new seal, the words " this side out" will be seen. This side of the seal must be facing OUTSIDE the engine when correctly installed. While this may seem backwards, it is correct. In addition, the protective nylon (plastic) sleeve that the seal is mounted on in the package was designed so that the seal can only be installed in the proper direction when using the installation tool described in the following steps.
Install the rear main seal (1), with the protective nylon sleeve attached (2), onto the mandrel. The seal, if properly installed, will center on a step that protrudes from the center of the mandrel. As an error proof, seal will fit only one way onto the mandrel. Refer to the above illustration.

Important: Before installing the outer drive drum, bearing, washer and the drive nut onto the threaded shaft, apply a small amount of the Extreme Pressure Lubricant J 23444-A, provided in the tool kit.
Install the outer drive drum onto the mandrel (EN-48108). Install the bearing, washer and the drive nut onto the threaded shaft. Refer to the above illustration.
Using a wrench, turn the drive nut on the mandrel (EN-48108), which will push the seal into the engine block bore. Turn the wrench until the drive drum is snug and flush against the engine block. Refer to the above illustration.
Loosen and remove the drive nut, washer, bearing and drive drum. Discard the protective nylon sleeve.
Verify that the seal has seated properly.
Use a flat-bladed screwdriver to remove the two attachment screws from the mandrel and remove the mandrel from the crankshaft hub. Refer to the above illustration.
Install the engine flywheel. Refer to Engine Flywheel Replacement in SI or the appropriate Service Manual.
Install the transmission. Refer to Transmission Replacement in SI or the appropriate Service Manual.
Inspect for proper fluid levels.
Inspect for leaks.

Parts Information

Part Number

Description

12592195 (U.S. and Canada)

Seal Assembly, Crankshaft Rear Main Oil (Includes Nylon Protective Sleeve)

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

J1120

Seal, Crankshaft Rear Main - Replace

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.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Document ID# 2023408

2002 GMC Truck GMC C Sierra - 2WD