'07 Nbs

Controller · October 8, 2007

I have 2800 miles on my truck and there is now a large puddle of oil on my garage floor. I looked and the flywheel cover is covered with oil as well as the oil pan. I can't tell where it's coming from

I guess it's warranty time. And the transmission seems to shift hard sometimes with a clunk from 1 to 2nd, anyone else have this issue??

Oh, and I want to put on a bug deflector, anybody have any recomendations or pics that i can look at?

Thanks.

VMax2007 · October 8, 2007

I have 2800 miles on my truck and there is now a large puddle of oil on my garage floor. I looked and the flywheel cover is covered with oil as well as the oil pan. I can't tell where it's coming from

I guess it's warranty time. And the transmission seems to shift hard sometimes with a clunk from 1 to 2nd, anyone else have this issue??

Oh, and I want to put on a bug deflector, anybody have any recomendations or pics that i can look at?

Thanks.

Read this and it's related thread (linked in post #3):

http://www.gm-trucks.com/forums/index.php?showtopic=68585

MS3DALE · October 8, 2007

This could be your problem.....

Document ID# 1923112

Subject: All Vortec GEN IV V8 Engines - LY2 LS4 LC9 LH6 LMG LY5 LS2 L76 LY6 L92 LS7, Low Oil Level Indicator Lamp On and/or Engine Oil Leak (Reseal Oil Pressure Sensor) #07-06-01-004 - (03/16/2007)

Models: 2006-2007 Buick Rainier

2006-2007 Cadillac Escalade Models, CTS-V

2006-2007 Chevrolet Corvette ZO6, Impala SS, Monte Carlo SS

2006-2007 Chevrolet Avalanche, Silverado, Silverado HD, Suburban, Tahoe, TrailBlazer, TrailBlazer SS

2006-2007 GMC Envoy, Envoy Denali, Sierra, Sierra HD, Sierra Denali, Yukon, XL, Yukon Denali XL

2006-2007 Pontiac Grand Prix GXP

2006-2007 Saab 9-7X V8

with Vortec® GEN IV V8 4.8L, 5.3L, 6.0L, 6.2L or 7.0L Engine (VINs C, 3, M, 0, C, J, H, U, Y, K, 8, E -- RPOs LY2, LC9, LH6, LMG, LS4, LY5, LS2, L76, LY6, L92, LS7)

With or Without Active Fuel Management System

Condition:

Some customers may comment on a low oil level indicator lamp on and/or engine oil leak. Upon further investigation, the technician may find that the oil leak is at the oil pressure sensor that is threaded into the valve lifter oil manifold (VLOM) assembly and/or engine valley cover.

Correction:

If the engine oil leak was found to be at the engine oil pressure sensor, then remove the oil pressure sensor and reseal with a pipe sealant with Teflon or equivalent, P/N 12346004 (in Canada, P/N 10953480). Refer to Engine Oil Pressure Sensor and/or Switch Replacement in SI.

Parts Information:

Part Number:12346004 (U.S.)

10953480 (Canada)

Description: Sealant-Pipe with Teflon

Warranty Information (excluding Saab U.S. Models)

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

N2220

Switch-Engine Oil Pressure Sender - Replace

Use Published Labor Operation Time

Warranty Information (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

2216301

Switch-Engine Oil Pressure Sender - Replace

22163

57

0

01

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

MS3DALE · October 8, 2007

Heres the other one that VMax2007 refers to in his thread........

Document ID# 1848158

Subject: 4L60-E, 4L65-E Automatic Transmission Fluid Leak from Oil Pump or Bell Housing Area (Remove Burrs on Torque Converter Hub, Pump Drive Slots, Replace Torque Converter Hub-to-Oil Pump Seal Assem. (243)) #06-07-30-016 - (07/18/2006)

Models: 2006 Buick Rainier

2006 Cadillac Escalade, Escalade ESV, Escalade EXT

2006 Chevrolet Colorado, Corvette, Express, Silverado, SSR, TrailBlazer

2006-2007 Chevrolet Avalanche, Suburban, Tahoe

2006 GMC Canyon, Envoy, Savana, Sierra

2006-2007 GMC Yukon

2007 GMC Yukon XL

2006 Pontiac GTO

2006 HUMMER H2, H3

2006 Saab 9-7X

with 4L60-E or 4L65-E Automatic Transmission (RPOs M30 or M32)

Condition

Some customers may comment on an automatic transmission fluid leak. Upon further investigation, the technician may find fluid leaking from the oil pump or bell housing area. This leak may be very slight with only dampness of one or two drops of ATF observed at the bottom of the bellhousing.

Cause

Investigation of 2006 transmissions has shown small scratches or cuts in the torque converter hub-to-pump seal (243). These scratches or cuts may be caused by small burrs on the torque converter hub, pump drive slots.

Correction

Verify that the leak is coming from the oil pump or bell housing area by the use of oil dye in the transmission. Refer to Fluid Leak Diagnosis in SI. Clean the transmission suspected area of all residual oil and drive the vehicle to see if the dye begins to appear. If this is a vehicle with very low mileage and it appears to have a small leak, it could have assembly oil in the bell housing which is not truly a leak.

Once the dye has started to appear, disassemble and inspect for small cuts in the torque converter hub-to-oil pump seal assembly (243). The cuts may be caused by small burrs on the torque converter hub, oil pump drive slots. The burrs can be seen or felt with your finger and if found, the burrs should be removed with a file. Also replace the oil pump seal assembly. Refer to the above illustration (1).Do not replace the torque converter for this concern.

The torque converter hub-to-oil pump seal assembly leak caused by these cuts is typically very small, causing only a few drops of fluid loss.

Parts Information

Part Number

Description

Qty

24202535

Oil Pump Seal Assembly

1

Warranty Information (excluding Saab U.S. Models)

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

K7100

Seal, Transmission Oil Pump - Replace

Use Published Labor Operation Time

K9508*

Inspect and/or Remove Burrs On Torque Converter Hub, Pump Drive Slots

0.1 hr

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

Warranty Information (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

4417002

Engine Code S

Pump Gasket and/or O-Ring Seal - R&R or Replace

44170

50

0

01

Use Published Labor Operation Time

4417003

Engine Code M

--

Use Published Labor Operation Time

4417004

Inspect and/or Remove Burrs On Torque Converter Hub, Pump Drive Slots

--

0.1 hr

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# 1848158