Hummer H3. Manual — part 1070

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC STARTING POINT - PROPELLER SHAFT

Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the
Description and Operation information will help you determine the correct symptom diagnostic
procedure when a malfunction exists. Reviewing the Description and Operation information will
also help you determine if the condition described by the customer is normal operation. Refer to
Symptoms - Propeller Shaft in order to identify the correct procedure for diagnosing the
system and where the procedure is located.

SYMPTOMS - PROPELLER SHAFT

Before beginning diagnosis, review the system description and operation in order to familiarize
yourself with the system function. Refer to Propeller Shaft Description and Operation.

Classifying the Symptom

Propeller Shaft symptoms can usually be classified into the following categories:

Leaks

Noises

Vibrations

Leak and noise related symptoms are diagnosed within the Propeller Shaft section. For vibration

Callout

Component Name

1

Propeller Shaft Slip Yoke

2

Propeller Shaft Universal Joint Spider Bearing Retainer Ring

3

Propeller Shaft Universal Joint and Bearing

4

Propeller Shaft Tube

5

Propeller Shaft Center Bearing

6

Propeller Shaft Yoke

7

Propeller Shaft Yoke Retaining Nut

8

Propeller Shaft Universal Joint and Bearing

9

Propeller Shaft Universal Joint Bearing Retaining Ring

10

Propeller Shaft Tube

11

Propeller Shaft Universal Joint and Bearing

12

Propeller Shaft Universal Joint Bearing Retaining Ring

2007 Hummer H3

2007 Driveline/Axle Propeller Shaft - H3

related symptoms, refer to Diagnostic Starting Point - Vibration Diagnosis and Correction .

Visual/Physical Inspection

Inspect the system for aftermarket devices which could affect the operation of the Propeller
Shaft.

Inspect the easily accessible or visible system components for obvious damage or conditions
which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the
symptom:

Leak at Front Slip Yoke

Universal Joint Noise

Ping, Snap or Click Noise

Knock or Clunk Noise

Scraping Noise

Squeak Noise

Shudder on Acceleration at Low Speed

LEAK AT FRONT SLIP YOKE

Leak at Front Slip Yoke

Checks

Action

DEFINITION: An occasional drop of lubricant leaking from the splined yoke is normal and
requires no attention.
The slip yoke barrel is
burred, nicked, corroded or
worn.

1. Inspect the slip yoke for burrs.

Minor burrs can be removed by careful use of crocus
cloth or fine stone honing.

2. If the is badly burred, corroded or worn, replace the

yoke.

3. Replace the oil seal. Refer to one of the following:

Transfer Case Assembly Replacement

Transmission Housing Oil Seal Replacement -

2007 Hummer H3

2007 Driveline/Axle Propeller Shaft - H3

UNIVERSAL JOINT NOISE

Universal Joint Noise

PING, SNAP OR CLICK NOISE

Ping, Snap or Click Noise

KNOCK OR CLUNK NOISE

Knock or Clunk Noise

Rear

There is a faulty
transmission or transfer case
output shaft oil seal.

Replace the oil seal. Refer to one of the following:

Transfer Case Assembly Replacement

Transmission Housing Oil Seal Replacement - Rear

Problem

Action

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

Replace the universal joint. Refer to Universal Joint
Replacement - External Snap Ring.

One or more of the universal
joints have lost lubricant

Replace the universal joint. Refer to Universal Joint
Replacement - External Snap Ring.

The yoke retainer strap bolts
are loose

Tighten the yoke retainer strap bolts to specifications. Refer to
Fastener Tightening Specifications.

Checks

Action

DEFINITION: A ping, snap or click is usually heard on initial load after the transmission is
in gear, either in forward or reverse.
The fixed yoke or the pinion
yoke is loose.

Tighten the bolts and the pinion nut to specified torque. Refer
to Fastener Tightening Specifications.

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

Replace the universal joint. Refer to Universal Joint
Replacement - External Snap Ring.

Checks

Action

DEFINITION: Knocking or clunking noise occurs when operating the vehicle in high gear
or coasting in neutral at 16 km/h (10 mph).
One or more of the universal
joints are worn or damaged.

Replace the universal joint. Refer to Universal Joint
Replacement - External Snap Ring.

The side gear hub
counterbore in the

Replace the differential case and/or the side gears. Refer to
Differential Replacement .

2007 Hummer H3

2007 Driveline/Axle Propeller Shaft - H3

SCRAPING NOISE

Scraping Noise

SQUEAK NOISE

Squeak Noise

SHUDDER ON ACCELERATION AT LOW SPEED

Shudder on Acceleration at Low Speed

REPAIR INSTRUCTIONS

FRONT PROPELLER SHAFT REPLACEMENT

Removal Procedure

differential is worn oversize.

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 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 .

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

Replace the universal joint. Refer to Universal Joint
Replacement - External Snap Ring.

2007 Hummer H3

2007 Driveline/Axle Propeller Shaft - H3