Hummer H3. Manual - part 1198

System Description

This symptom table will enable the user to verify the customer complaint and narrow it to its
source. If there is a concern with voice recognition or OnStar® talk button inoperative,
technicians should proceed directly to the applicable diagnostic.

Diagnostic Aids

The customer concern may have been due to a lack of cellular service in a given area or a
failure in the National Cellular Network infrastructure that has since been corrected.

If the prompt OnStar Request Ended is heard without pressing the white dot button at the
end of an OnStar® keypress, the OnStar® system at one time made a successful cellular
connection, but was unable to complete the call. If repeated calls are placed with this result,
contact the General Motors Technical Assistance Center.

An inaccurate or aged global positioning system (GPS) position may have been due to the
temporary loss of GPS signal reception by the vehicle in instances, such as driving through
tunnels or parking structures which restrict the navigation antenna from a clear view of the
satellites in the sky.

OnStar Symptom Diagnosis

IMPORTANT: To successfully diagnose and repair the OnStar® system it is

necessary to comprehend its operation. Technicians should read
and understand the OnStar Description and Operation before
attempting to repair an OnStar® system.

Step

Action

Yes

Did you perform the Diagnostic System
Check - Vehicle?

Go to Step 2

Go to Diagnostic
System Check -
Vehicle

1. Turn ON the ignition, with the engine

OFF.

2. Observe the OnStar® status LED

Does the LED turn green?

Go to Step 3

Go to OnStar
Button LED
Inoperative

1. Turn the radio ON.

2. Set the volume to a comfortable

level.

3. Press the OnStar® Call Center

2007 Hummer H3

2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3

button.

4. Wait approximately 10 seconds then

end the call by pressing the white dot
button.

Does both the OnStar® LED blink after
the OnStar® keypress is made and the call
ended after pressing the white dot button?

Go to Step 4

Go to OnStar
One or More
Buttons
Inoperative

After the OnStar® keypress, does both the
radio mute and is the Connecting to OnStar
message heard playing through the audio
system?

Go to Step 5

Go to No (or
Noisy) OnStar
Audio

1. Press the OnStar® Call Center

button.

2. Wait for the system to either connect

or end the call.

Is a connection made with OnStar®?

IMPORTANT:

It is important to have the vehicle in an open
outside area where a cellular call can be
successfully placed and global positioning
system (GPS) data can be received from
satellites.

Go to Step 6

Go to Step 9

Ask the OnStar® Call Center advisor if
your voice can clearly be heard.Does the
advisor clearly hear your voice?

IMPORTANT:

It is necessary to inform the OnStar® Call
Center advisor that this call is for vehicle
diagnostic purposes.

Go to Step 7

Go to OnStar
Microphone
Inoperative -
Caller Cannot
Be Heard

Ask the OnStar® Call Center advisor if
they have received any data from the
customer vehicle.
Did data transfer of the OnStar® call
occur?

Go to Step 8

Go to Step 11

Ask the OnStar® Call Center advisor if the
vehicle has ever been configured.

2007 Hummer H3

2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3

Has the vehicle been configured?

Go to Step 10

Go to Step 16

Is the audio prompt Unable to Contact
OnStar® heard?

Go to Unable to
Contact OnStar
Call Center

Go to Step 12

Ask the OnStar® Call Center advisor to
verify the vehicle identification number
(VIN) which they have on record and
ensure it matches the actual VIN.
Does the VIN at the OnStar® Call Center
match the VIN of the vehicle?

Go to Step 13

Go to Step 15

Ask the OnStar® Call Center advisor if
this call was a fail to voice.
Was this call a fail to voice?

Use the scan tool
to access the
STID and ESN
and contact the
General Motors
Technical
Assistance
Center

Is the audio prompt OnStar® Request
Ended heard?

Go to Diagnostic
Aids

Ask the OnStar® Call Center advisor to
verify your position.
Is the location provided by the OnStar®
Call Center advisor within a reasonable
distance from the actual location of the
vehicle?

Go to Step 14

Go to OnStar
Global
Positioning
System (GPS)
Data Not
Current or
Inaccurate

Ask the OnStar® Call Center advisor if the
global positioning system (GPS) position is
marked as Current.
Is the GPS position current?

Go to Step 17

Go to OnStar
Global
Positioning
System (GPS)
Data Not
Current or
Inaccurate

Ask the OnStar® Call Center advisor to
update the customer account with the
correct information.
Has the customer account been updated?

Go to Step 16

2007 Hummer H3

2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3

ONSTAR TALK BUTTON INOPERATIVE

OnStar Talk Button Inoperative

Ask the OnStar® Call Center advisor to
perform a reconfiguration on the vehicle.
Was the reconfiguration successful?

Go to Step 18

Ask the OnStar®
Call Center
advisor why the
reconfiguration
was not
successful, use the
scan tool to access
the STID and
ESN and contact
the General
Motors Technical
Assistance Center

Is the customer concern with the inability
of the OnStar® Call Center to perform
remote functions?

Go to OnStar
Call Center
Remote
Function
Requests
Inoperative

Go to Diagnostic
Aids

Operate the system in order to verify the
customer concern has been corrected.
Has the customer concern been corrected?

System OK

Go to Step 2

Step

Action

Yes

Schematic Reference: OnStar Schematics
Connector End View Reference: Entertainment/Communication Connector End
Views

Did you perform the Diagnostic System
Check - Vehicle?

Go to Step 2

Go to
Diagnostic
System Check -
Vehicle

Verify the talk button is inoperative.
Does the talk button operate normally?

Go to Testing
for Intermittent
Conditions and
Poor
Connections

Go to Step 3

2007 Hummer H3

2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3

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