Tranny Clunk

[limeylee]

I have an 03 Denali that seems to clunk back in to 1st just a little too hard when I come to a stop at a light or stop sign.
Is this normal or a sign of an issue?

Thanks for your help.

 

[MyBlkBurban]

My 04 Suburban 5.3 clunks as well usually the same way --- usually when coming to a stop at around the 10-15 mph range when stopping to 0 from any normal crusing speed. It also does a clunk when giving it gas like a grandma from a stop at around 30-35 mph shift. If I give I give it gas a little harder when I take off from a stop it will shift smooth...

Just figure that's normal I guess...

 

[shadow]

Guys, could be one of these -

Clunk, Bump or Squawk when Vehicle Comes to Complete Stop or Accelerating from Complete Stop or Accelerating from Complete Stop (Replace Rear Drive Shaft Nickel-Plated Slip Yoke) #01-04-17-004B - (Jan 5, 2005)
Clunk, Bump or Squawk when Vehicle Comes to Complete Stop or Accelerating from Complete Stop (Replace Rear Drive Shaft Nickel-Plated Slip Yoke)
1999-2000 Cadillac Escalade (Old Style)

2002-2004 Cadillac Escalade, Escalade EXT

2003-2004 Cadillac Escalade ESV

1996-1999 Chevrolet 1500 Series Extended Cab Short Box Pickup (Old Style)

1996-1999 Chevrolet 1500 Series Regular Cab Pickup and Utility Models (Old Style)

1999-2002 Chevrolet Silverado Extended Cab Short Box (New Style)

1999-2004 Chevrolet Silverado 1500 Series Regular Cab (New Style)

2000-2004 Chevrolet 1500 Series Avalanche, Suburban and Tahoe

2001-2004 Chevrolet Silverado 2500/3500 Series Regular Cab with Long Bed or Extended Cab (New Style)

2001-2004 Chevrolet Silverado 2500 Series Crew Cab, Short Box (New Style)

1996-1999 GMC 1500 Series Extended Cab Short Box Pickup (Old Style)

1996-1999 GMC 1500 Series Regular Cab Pickup and Utility Models (Old Style)

1999-2002 GMC Sierra Extended Cab Short Box (New Style)

1999-2004 GMC Sierra 1500 Series Regular Cab (New Style)

2000-2004 GMC 1500 Series Yukon, Yukon XL

2001-2004 GMC Sierra 2500/3500 Series Regular Cab with Long Bed or Extended Cab (New Style)

2001-2004 GMC Sierra 2500 Series Crew Cab, Short Box (New Style)

2003-2005 HUMMER H2

with Four Wheel Drive (4WD) or All Wheel Drive (AWD) and One-Piece Propeller Shaft ONLY

This bulletin is being revised to add Cadillac Escalade (Old Style) and HUMMER H2 to the Models section. Please discard Corporate Bulletin Number 01-04-17-004A (Section 04 -- Driveline/Axle).

Condition
Some customers may comment on a clunk, bump or squawk noise when the vehicle comes to a stop or when accelerating from a complete stop.

Cause
A slip/stick condition between the transfer case output shaft and the driveshaft slip yoke may cause this condition.

Diagnostic Tips
There are several resources in the electronic Service Information System which can provide the technician with information on diagnosis and repair of clunk conditions, and fix the customer's vehicle right the first time without unnecessary parts replacement. Some of the documents available in SI include:

• Symptoms - Propeller Shaft (SI Document ID #697266)

• Knock or Clunk Noise (SI Document ID #697290)

• Rear Drive Axle Noises (SI Document ID #700580)

• Launch Shudder/Vibration on Acceleration (Replace Propeller Shaft and Install a New Pinion Flange/Seal), Bulletin #02-04-17-001

• Information on 2-3 Upshift or 3-2 Downshift Clunk Noise, Bulletin #01-07-30-042

• Driveline Clunk When Stopping (Reprogram Powertrain Control Module (PCM), Bulletin #03-07-30-028

Correction
Replace the rear drive shaft slip yoke with a new nickel-plated slip yoke.


OR - (this is info sent to me from a GM tech on another forum)

there's a common problem with the transfer cases that might be causing your clunk. There is a bulletin fingering a retaining clip as the source of an oil leak. What happens is the clip wears out & allows the clutch pack to slop around in the case, eventually wearing a hole through the case & causing the leak. This clip will also cause an annoying clunk noise intermitant from the slop. Get under your truck, in park, engine doesn't have to be running. Grab the front driveshaft at the transfer case & twist it back & forth quickly. If you hear a similar noise, that's the problem. Hopefully you're under warranty. That $2 clip was redesigned to hold better, but the transfer case needs to come out & apart, like a rebuild.

MY CLUNK happens to be the dammed TC, but I will live with it until it goes, then replace.

Go to this site to learn more about the transfer case rebuild (downloadable PDF on how to rebuild to address defect). Gee, someone actually had to make a product to address this defect.

Good Luck Guys -

 

[limeylee]

Thats great info thanks guys.
Off to the dealer I guess, thankfully I am still under warranty.
Do you think they will give me any grief over my Volant?