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