Driveshaft yoke TSB?

oldschool327 · January 20, 2012

I stopped by the dealer today to have the driveline clunk looked at and after 120.00 bucks he said they lubed it and nothing else could be done. I asked why the charge as they never have the past three times. He said (this was a new service advisor) that the warranty does not cover "normal maintenace" as he said this was. I knew this was incoorect but had no time to argue the point and said I would get back to him if the problem was not fixed. I intended to call the service manager in the morning about the charge. Well on my way home the driveshaft still made the same noise and I called him right back. He did offer to refund the money because the problem wasnt fixed but said nothing could be done to remedy the problem.

Question- The only TSB I f find on this board is for 2004 and older trucks. Is there an updated TSB about the problem and nickle plated shaft? If anyone has it I would really appreciate it.

My truck is a 2007 and the warranty runs out in March so I would like to get this fixed before that.

Thanks

pacrat1958 · January 20, 2012

TECHNICAL

Bulletin No.: 09-04-21-003D

Date: January 14, 2011

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 bulletin 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.

Supercede:

This bulletin is being revised to update the warranty statement. Please discard Corporate Bulletin Number 09-04-21-003C (Section 04 - Driveline/Axle).

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

Do not use grease for lubrication of the slip yoke splines on 4WD vehicles. The output shaft in a 4WD transfer case does not have a grease retainer to keep the grease from migrating into the transfer case and mixing with the fluid inside. Grease is not compatible with the automatic transmission fluid (ATF) used in the transfer case and can cause damage if mixed.

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 1. Remove the rear drive shaft. Refer to One-Piece Propeller Shaft Replacement in SI. 2. Inspect the rear propshaft slip yoke splines.

Note

Protect the transfer case rear seal from Brake Clean.

3. Clean the rear propshaft slip yoke splines with Brake Clean or equivalent and a shop towel. 4. Assure that the splines are free of rust or other foreign material. 5. Lubricate the spline with Automatic Transmission Fluid, P/N 88861003 (in Canada, 19264717). 6. Reinstall the rear drive shaft. Refer to One-Piece Propeller Shaft Replacement in SI. 7. Road test the vehicle and verify that the noise is gone. 8. 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.

1. Remove the transfer case assembly. Refer to Transfer Case Assembly Replacement in SI. 2. Disassemble the transfer case. Refer to Transfer Case Disassemble in SI. 3. Replace the transfer case rear output shaft. Refer to the Parts Information below. 4. Assemble the transfer case. 5. Reinstall the transfer case assembly.

oldschool327 · January 20, 2012

Thank you very much!!!

pacrat1958 · January 20, 2012

Your welcome. Hope it helps you at the dealer.

oldschool327 · January 20, 2012

I called GM warranty this morning about the TSB and the service I got yesterday. They verified and had the regoinal service rep call the dealer to authorize the refund and warranty for the new transfer shaft.

When I showed up they said that they thought my truck was a 2wd and that the service center at GM told them what to say about there is no fix. Anyways they ordered the part and on Monday will take it back in for the repair.

Thank you for the info and also other members for the GM warranty number from another post.

latreille89 · January 31, 2012

Nice to know there's a new Tsb. They greased my Yoke last summer. Now I'm going to tell them to clean out the transfer case since they clearly realized that isn't the right fix.

gnet158 · January 31, 2012

When I was looking for my new truck I test drove a new 2011 silverado at another dealership that had the clunk. I told the dealer I wouldn't buy it for that reason, they said it was normal and they could "fix it". So add 2011's to that list. STINKS...

BlackZ71Silverado · February 1, 2012

I called GM warranty this morning about the TSB and the service I got yesterday. They verified and had the regoinal service rep call the dealer to authorize the refund and warranty for the new transfer shaft.

When I showed up they said that they thought my truck was a 2wd and that the service center at GM told them what to say about there is no fix. Anyways they ordered the part and on Monday will take it back in for the repair.

Thank you for the info and also other members for the GM warranty number from another post.

Glad to hear you got this worked out.....It's hard to deal with some of these dealerships when the service manager is not easy to deal with, or thinks he knows it all.

Chiefmorton · September 27, 2012

I know this is an older thread but wondered if having the transfer case output shaft and yoke replaced has fixed the clunk/sloppy driveline. My truck is having the sloppy clunking issues now and really hope to get it resolved while I'm still under warranty. I get the clunk when shifting from 1st to 2nd under low rpm, pretty bad clunk when I coast into a side road and then push on the gas, instant clunk. I have read a ton of posts about this issuejust hope the replacement parts fix it.