New front Diff.

[BIGT]

I have around 58,000 miles on 03 H2. I started to notice a vibration in the left front end a few weeks ago, so I took it into the Hummer dealer. They didn’t take me too seriously, but after 58,000 miles, I know my truck. Well, it ended up that the front differential output shaft on the left side was worn. It had about ¼ of play. Well, they replaced the entire front differential for me. Good thing I bought the GM extended warranty. They did it at no cost to me. Since I have been driving it for the past week since the repair, I feel a clunk under the driver side floor board. Like someone is hitting it with a hammer. Not all the time, but mostly from a stop when I’m turning left. Anyone have any thoughts on what it might be before I take it back?

Tony.

[BIGT]

I have around 58,000 miles on 03 H2. I started to notice a vibration in the left front end a few weeks ago, so I took it into the Hummer dealer. They didn’t take me too seriously, but after 58,000 miles, I know my truck. Well, it ended up that the front differential output shaft on the left side was worn. It had about ¼ of play. Well, they replaced the entire front differential for me. Good thing I bought the GM extended warranty. They did it at no cost to me. Since I have been driving it for the past week since the repair, I feel a clunk under the driver side floor board. Like someone is hitting it with a hammer. Not all the time, but mostly from a stop when I’m turning left. Anyone have any thoughts on what it might be before I take it back?

Tony.

[drmiles]

http://elcova.com/groupee/forums?a=search&reqWords=noise+in+front+end

Try this

[BIGT]

That relates to the rear diff. I did not have this noise before the front was replaced. Might be the rear, but I don't think so.

Tony

[drmiles]

Read again it is noises in the frone end.
Some or front shocks, some or tie rods. Sometimes its it the crossmember flexing when the truck is turning.

My 03 made the noise if I stopped fast or backed up and turned left. The dealer can remove the crossmember if that is the problem and grease it, this only gets rid of the problem temporarly. As far as I know they don't have a permenant fix. Check with you dealership. Something loose can be a big issue.

[BIGT]

I know, but the link inside the link related to the rear diff. I will just have to have the dealer look at it again.
Thanks.

T.

[drmiles]

Document ID # 1230187
2003 HUMMER H2

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Clunking Noise Under Hood and Can Be Felt In the Steering Wheel (Lubricate Intermediate Steering Shaft Assembly) #00-02-35-003B - (01/24/2003)
Clunking Noise Under Hood and can be felt in the Steering Wheel (Lubricate Intermediate Steering Shaft Assembly)
2002-2003 Cadillac Escalade, Escalade EXT

1999-2003 Chevrolet Silverado

2000-2003 Chevrolet Suburban, Tahoe

2002-2003 Chevrolet Avalanche

1999-2003 GMC Sierra

2000-2003 GMC Yukon, Yukon XL

2003 HUMMER H2

With Recirculating Ball-Type Steering

This bulletin is being revised to add model years and models and Correction information. Please discard Corporate Bulletin Number 00-02-35-003A (Section 02 -- Steering).

Condition
Some customers may comment on a clunk type noise coming from under the hood that also can be felt in the steering wheel. These conditions may be more noticeable when turning at low speeds on rough road surfaces.

Correction

Important
DO NOT REPLACE THE FOLLOWING INTERMEDIATE STEERING SHAFT P/Ns

26085548
26049343
26083324
26088325
15772436
26078079

Remove the intermediate shaft from the vehicle and lubricate the intermediate shaft with a Steering Column Intermediate Shaft Lubrication Kit, P/N 26098419. Follow the service procedure below.

Set the front wheels in the straight-ahead position.
Set the steering wheel in the LOCK position.



From inside the vehicle, remove the upper bolt from the upper intermediate steering shaft (1) to the steering column connection.



From under the hood, remove the lower bolt that connects the upper intermediate shaft to the steering gear coupling shaft.
Remove the upper intermediate steering shaft assembly.
From inside the vehicle, slide the shaft down and off the steering column shaft.
From under the hood, slide the shaft towards the dash in order to disengage the shaft from the steering gear coupling shaft.
From inside the vehicle, slide the upper intermediate shaft through the dash boot seal and remove the shaft from the vehicle.



Remove the spacer clip from the end of the intermediate shaft with a pair of needle nose pliers.
Fully extend the shaft by pulling the two shafts apart.



Apply the syringe of grease supplied in the Steering Column Intermediate Shaft Lubrication Kit, P/N 26098419, into the open end of the shaft. Direct the syringe tip as deep as possible into the shaft and dispense the full content of the syringe.



Insert the plug supplied in the Steering Column Intermediate Shaft Lubrication Kit into the open end of the shaft and finger tighten the wing nut.



Place the plugged end of the shaft on a hard surface and apply pressure to collapse the shaft and dissipate the grease through the shaft.
Remove the plug from the shaft and fully extend the shaft.



Inspect the shaft for a minimum of 13 mm (1/2 in) of grease on the shaft splines.
Repeat steps 10-12 if less than 13 mm (1/2 in) of grease is on shaft splines.
Clean the excess grease off of the shaft splines and around the shaft opening.



Carefully spread apart the spacer clip with a pair of pliers.



Reinstall the spacer clip into the open end of the shaft.



Align the spacer clip with the stakes in the shaft.
Reinstall the upper intermediate steering shaft through the dash boot seal and slide the lower end into the steering gear coupling shaft.
Raise the upper end of the intermediate steering shaft and install into the steering column shaft.
Install the upper bolt and nut. Tighten
Tighten the bolt to 47 N·m(35 lb ft).

Install the lower bolt and nut. Tighten
Tighten the bolt to 50 N·m(37 lb ft).

Parts Information
Part Number
Description
Qty

26098419
Lubrication Kit, Steering Column Intermediate Shaft
1


Parts are currently available from GMSPO.

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

E7700
Shaft, Steering Intermediate - R&R (Lubrication)
0.4 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

© Copyright General Motors Corporation. All Rights Reserved.


--------------------------------------------------------------------------------
Document ID # 1230187
2003 HUMMER H2

[drmiles]

Document ID# 1516297
2004 Cadillac Escalade

--------------------------------------------------------------------------------

Snap/Popping Type Noise Coming From Front of Vehicle (Remove Front Crossmember and Slot Mounting Holes) #03-08-61-002B - (05/20/2004)
Snap/Popping Type Noise Coming from Front of Vehicle (Remove Front Crossmember and Slot Mounting Holes)
2003-2005 Cadillac Escalade

2003-2005 Chevrolet Avalanche, Suburban, Tahoe

2004-2005 Chevrolet Silverado with Recirculating Ball Type Steering

2003-2005 GMC Yukon, Yukon XL

2004-2005 GMC Sierra with Recirculating Ball Type Steering

All 1500 Series (½ Ton) with Two-Wheel Drive

This bulletin is being revised to add models and update the correction information. Please discard Corporate Bulletin Number 03-08-61-002A (Section 08 -- Body and Accessories).

Condition
Some customers may comment on a snap or popping-type noise coming from the front of the vehicle. This condition is most apparent during hard left or right turns at low speeds. Going over bumps while turning may also aid in producing this noise.

Correction
Slot the left side mounting holes on the front crossmember using the procedure listed below.

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Manual.
Remove the mounting nuts, bolts and front crossmember from the vehicle.
Clean all the undercoating off the crossmember in the area of the left side mounting holes.

Notice
Use a die grinder or file to cut slots. DO NOT use a torch. Using a torch may compromise the structural integrity of the vehicle.


Enlarge the mounting holes on the left side of the crossmember into slots. Cut the slots to the inboard side (toward center of crossmember) of the holes, 2 mm (0.07874 in).
Reinstall the crossmember with the bolts and nuts. Tighten
Tighten the bolts to 120 N·m (89 lb ft).

Apply an even coat of Anti-Corrosion Coating, P/N 12346501, or equivalent to the crossmember where removed. Overlap the original coating in order to provide an effective corrosion protection.
Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

A9976*
Pop/Noise, Frame Rail - Repair
0.5 hr


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



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


© Copyright General Motors Corporation. All Rights Reserved

[OrangeCrush]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> Anyone have any thoughts on what it might be before I take it back?

Tony. </div></BLOCKQUOTE>

If I understand your question, you're not asking what the problem is/was but rather how long it should take to get it done, correct?

I can take my frt diff out of my H2 in less than an hour. To split the case and install gears, bearings, seals, etc, it could take another 2-3 hours.

The entire job should be done in 4-5 hours. I know, I just had to replace my front diff Thanksgiving week. My cost was 590 bucks for the diff. (lists for around 700 bucks)

I would imagine if you took it to a dealer, they wouldn't keep the truck for more than 2 days.

Mark

[BIGT]

Thanks for the tips. I just like to have an idea about what's going on before I bring it back to the dealer.

I have a lift at my office. I'm going to put the H2 on it today and take a look.

Tony.

[PARAGON]

Ahh.... hammer to the floorboard. Been there done that. DS inner fenderwell panel flex, skid plate bolt loose, control arm bolts loose, etc.

When my front diff was replaced I had a pop only under braking. They didn't get the bolts tight when they re-installed the diff.