Drive Line

[rtsb]

I have a 2008 2wd Silverado /at ,5.3 when I have it in 3rd when i take off I can feel like the drive line is lagging a little it will lag and then like catch .Any one have that same problem?

 

Also when I have it in drive and I'm at a stop light after awhile it feels like some one bumped into me.

Any one have that problem.

 

Thanks Doug

[MS3DALE]

Also when I have it in drive and I'm at a stop light after awhile it feels like some one bumped into me.

Any one have that problem.

 

Thanks Doug

 

This has been a common issue for years....

 

Subject: Clunk Noise at Stop or from Launch (Clean/Lubricate Rear Propshaft Slip Yoke Splines)

 

 

Models: 2007-2009 Chevrolet Silverado 1500 Series

 

2008-2009 Chevrolet Avalanche, Suburban, Tahoe 1500 Series

 

2007-2009 GMC Sierra 1500 Series

 

2008-2009 GMC Yukon, Yukon XL 1500 Series

 

Equipped with 4WD (RPO NQG, NQH)

 

 

 

Attention: This contains a procedure to clean/lubricate the rear propshaft slip yoke splines and replace, if necessary. Check the history on this vehicle. If the lubrication procedure has been performed previously, then continue on and replace the transfer case rear output shaft.

 

 

Condition

Some customers may comment on a bump feel or clunk noise at a stop or on launch. Customers may also comment that the bump feel or clunk is noticed after the vehicle has come to a complete stop and that it feels as if the vehicle was bumped from behind.

 

Cause

This condition may be caused by a slip/stick condition between the rear propshaft slip yoke and the transfer case rear output shaft splines. Braking to a complete stop can force the propshaft slip yoke forward into the transfer case while the vehicle rebounds slightly backward after stopping its momentum.

 

Correction

Note: The clunk noise may also be due to fuel movement in the fuel tank when not completely full. If the condition is eliminated after filling the fuel tank, the noise is isolated to the fuel movement in the tank. Please make no repair attempts, as this noise is considered an operating characteristic.

 

Verify the customer's concern.

 

Clean/Lubricate Rear PropShaft Slip Yoke Splines

•Remove the rear drive shaft. Refer to One-Piece Propeller Shaft Replacement in SI.

•Inspect the rear propshaft slip yoke splines.

Note: Protect the transfer case rear seal from Brake Clean.

 

•Clean the rear propshaft slip yoke splines with Brake Clean or equivalent and a shop towel.

•Assure that the splines are free of rust or other foreign material.

•Lubricate the spline with Automatic Transmission Fluid, P/N 88861003 (in Canada, 88861004).

•Reinstall the rear drive shaft. Refer to One-Piece Propeller Shaft Replacement in SI.

•Road test the vehicle and verify that the noise is gone.

•If the vehicle has a repeat concern after lubricating the slip yoke splines, replace the rear output shaft.

Replace Transfer Case Rear Output Shaft

Note: Do Not replace the output shaft unless the cleaning and lubrication procedure is ineffective.

 

•Remove the transfer case assembly. Refer to Transfer Case Assembly Replacement in SI.

•Disassemble the transfer case. Refer to Transfer Case Disassemble in SI.

•Replace the transfer case rear output shaft. Refer to the Parts Information below.

•Assemble the transfer case.

•Reinstall the transfer case assembly.

Parts Information

Part Number

Description

Qty

 

19133059

SHAFT, TRFER CASE (RPO NQH)

1

 

19133061

SHAFT, TRFER CASE (RPO NQG)

1

 

88861003 (in Canada, 88861004)

Automatic Transmission Fluid

[music]

This is the first time I've actually read the TSB, and have a question. I have read recommendations in numerous posts to "grease the slip yoke", but the TSB states to "clean and lubricate with transmission fluid". Did I misunderstand something?

[MS3DALE]

This is the first time I've actually read the TSB, and have a question. I have read recommendations in numerous posts to "grease the slip yoke", but the TSB states to "clean and lubricate with transmission fluid". Did I misunderstand something?

 

No,You read it right,I actually didn't realize they want you to use tranny fluid either til I read this particle TSB,We always used a special slip yoke spline grease before.

[rtsb]

This is the first time I've actually read the TSB, and have a question. I have read recommendations in numerous posts to "grease the slip yoke", but the TSB states to "clean and lubricate with transmission fluid". Did I misunderstand something?

 

No,You read it right,I actually didn't realize they want you to use tranny fluid either til I read this particle TSB,We always used a special slip yoke spline grease before.

 

 

 

WOW thanks I'm going to print this and bring it to the dealer again thankyou so much .Doug

[rtsb]

This is the first time I've actually read the TSB, and have a question. I have read recommendations in numerous posts to "grease the slip yoke", but the TSB states to "clean and lubricate with transmission fluid". Did I misunderstand something?

 

No,You read it right,I actually didn't realize they want you to use tranny fluid either til I read this particle TSB,We always used a special slip yoke spline grease before.

 

 

 

WOW thanks I'm going to print this and bring it to the dealer again thankyou so much .Doug

 

 

Well finally got it done last week after showing them the document they at first told me it was my lift kit I had to tell them to read the document that is the problem.Now it drives with no lag and no bump thanks again it's greatly appreciated.Doug

[VMaxtastic]

Sorry for resurrecting an old thread, but would that service bulletin be covered under warranty? As I am experiencing this sensation of being hit from behind while stopped.

 

Im not sure how these bulletins work.. if its stuff that should be done for free or if the customer has to pay for the service. Im only at 80,000 km and my warranty is good till 160k

[RyanbabZ71]

yes

[VMaxtastic]

Perfect. thanks. Ill get after these guys then

[ken1mod]

Chased this problem for months with mine. Turned out to be spring "wrap up"

 

Ken

[VMaxtastic]

Condition

Some customers may comment on a bump feel or clunk noise at a stop or on launch. Customers may also comment that the bump feel or clunk is noticed after the vehicle has come to a complete stop and that it feels as if the vehicle was bumped from behind.

 

 

Do you have the actual bulletin number for this? I need to show this to the service guy at the stealership i bought my truck from. he played dumb when I told him about a clunk when at a complete stop and only mentioned the well known launch/stop clunk

 

Theyre very eager to take my money.. but I'm not paying for something that should be free