Hummer H2. Manual - part 991

Scraping Noise 

SQUEAK NOISE 

Squeak Noise 

SHUDDER ON ACCELERATION AT LOW SPEED 

Shudder on Acceleration at Low Speed 

REPAIR INSTRUCTIONS 

PROPELLER SHAFT REPLACEMENT - FRONT 

Tools Required 

J 43218 Clamp Pliers - Narrow Jaw 

Removal Procedure 

Checks

Action

DEFINITION: A scraping noise occurs when driving the vehicle at various speeds.
The pinion flange deflector or the center bearing is rubbing.

Correct the interference as necessary.

Checks

Action

DEFINITION: When driving the vehicle at various speeds a squeaking sound occurs.
One or more of the universal joints have lost 
lubricant.

Replace the universal joint. Refer to the following: 

z

Universal Joint Replacement - Nylon Injected 
Ring  

z

Universal Joint Replacement - External Snap 
Ring  

Checks

Action

DEFINITION: When the vehicle is accelerating at low speed a shudder occurs.
The yoke retainer strap 
bolts are loose or missing.

Replace or tighten the yoke retainer strap bolts to specifications. Refer to 
Fastener Tightening Specifications .

The driveline joint angle is 
excessive or incorrectly 
set.

Determine if the driveline angle is incorrect and correct as necessary. Refer 
to Diagnostic Starting Point - Vibration Diagnosis and Correction in 
Vibration Diagnosis and Correction.

One or more of the 
universal joints are worn 
or damaged.

Replace the universal joint. Refer to the following: 

z

Universal Joint Replacement - Nylon Injected Ring  

z

Universal Joint Replacement - External Snap Ring  

IMPORTANT: Before disassembly, observe and accurately reference mark all driveline 

components relative to the propeller shaft and axles. These items include the 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Propeller Shaft - Hummer H2

  

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.  

2. Remove the transfer case shield. Refer to Transfer Case Shield Replacement in Transfer Case - BW 

4484. 

Fig. 3: Clamp & Transfer Case 

following components: 

z

The propeller shafts  

z

The wheel drive shafts  

z

The pinion flanges  

z

The output shafts  

 
Assemble all components in the exact relationship to each other as they were 
prior to removal. Observe all published specifications and torque values, and 
any measurements obtained prior to disassembly.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Propeller Shaft - Hummer H2

  

Courtesy of GENERAL MOTORS CORP.

3. If equipped with the double clamp style boot, remove the clamp (4) at the transfer case (3) by prying up 

the exposed end of the clamp with a flat-bladed tool.  

4. Reference mark the relationship of the propeller shaft to the front axle pinon yoke. 

Fig. 4: Front Propeller Shaft & Front Axle Pinion Yoke 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the bolts (6) and the yoke retainers (7) from the front axle pinion yoke (1). 

NOTE:

When removing the propeller shaft, do not attempt to remove the shaft by 
pounding on the yoke ears or using a tool between the yoke and the 
universal joint. If the propeller shaft is removed by using such means, the 
injection joints may fracture and lead to premature failure of the joint.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Propeller Shaft - Hummer H2

  

6. Disconnect the propeller shaft (2) from the front axle pinion yoke (1). 

Wrap the bearing caps with tape in order to prevent the loss of bearing rollers. 

Fig. 5: Boot, Groove & Transfer Case Output Shaft 
Courtesy of GENERAL MOTORS CORP. 

7. If equipped with the single clamp style boot, disconnect the boot from the groove on the transfer case 

output shaft. 

IMPORTANT: Do not drop the bearing cap assemblies of the yoke end.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Propeller Shaft - Hummer H2