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Mirrors Rattle/ Driveshaft clunk

NEFisher11

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NEFisher11 Enthusiast

NEFisher11

Posted
Posted

I recently added the tow mirrors to my truck (thanks to my girlfriend for buying them for Christmas) but i have noticed the large glass seems to rattle while driving on the highway. Is this normal? They are the GM ones also not some other 3rd party manufacture.

 

The other issue i have had with the truck sense purchasing is the the drive shaft clunks harshly sometimes after taking my foot of the gas and then re applying it. I have told me dealer several times about this and the mechanic did once drop the shaft and grease it, but it is still an issue and they keep telling me its normal. I don't think it is acceptable for a truck from new and now at 21,000 miles to have a clunk like this should i try a different dealer to get this resolved?

 

Thanks for any help

f0st3r Enthusiast

f0st3r

Posted
Posted

The rear end clunk is called "stop clunk" and if it is still under the power train warranty they will fix it for you. My 08 had that pretty bad, they first just grease the output shaft on the transmission and if it comes back they replace it.

NEFisher11 Enthusiast

NEFisher11

Posted
  • Author
Posted

The rear end clunk is called "stop clunk" and if it is still under the power train warranty they will fix it for you. My 08 had that pretty bad, they first just grease the output shaft on the transmission and if it comes back they replace it.

 

What you describe with the mirrors is normal, mine do the same thing....Drivetrain clunk is also normal, there is a fix for that take it to the dealership.

 

 

They greased the output shaft once already and it is still happening and said its normal. So there is a fix for this you are telling me. Is there a TSB for it?

f0st3r Enthusiast

f0st3r

Posted
Posted

Not sure of the TSB, but they put a nickel plated yoke on mine and I never had another issue. I put about 15k on it before I traded it in.

 

edit here is the TSB..

 

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.

Gurrzt Enthusiast

Gurrzt

Posted
Posted

Your problem is with either the slip yoke, or the u joint.

NEFisher11 Enthusiast

NEFisher11

Posted
  • Author
Posted

Not sure of the TSB, but they put a nickel plated yoke on mine and I never had another issue. I put about 15k on it before I traded it in.

 

edit here is the TSB..

 

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.

 

 

 

I tryed that TSB once and sense my truck is a 2011 and dose not fall within the years listed they wouldn't do that. I am begining to think i should just try a different dealership and see if they can remedy this issue once and for all. I love the truck but feel like it is unacceptable for this issue to have been dragged out so long.

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