Hummer H2. Manual — part 2089
Replacement - Rear No. 2 or Seat Cushion Frame Replacement - Rear in Seats.
Emergency Locking Retractors
1. Fasten the seat belts, an assistant is needed when the retractor under test is not part of the driver seat belt.
2. Accelerate the vehicle slowly to 16 km/h (10 mph) and apply the brakes firmly.
3. Verify that the seat belt locks when braking firmly.
4. If the belt does not lock, proceed with the following steps.
1. Remove the seat belt retractor assembly.
2. Tilt the seat belt retractor slowly.
Fig. 3: Tilting Seat Belt Retractor
Courtesy of GENERAL MOTORS CORP.
3. Ensure that the seat belt webbing can be pulled from the retractor at an inclination of 15 degrees or
less and cannot be pulled from the retractor at an inclination of 45 degrees or more.
CAUTION: Perform this test in an area clear of other vehicles or obstructions. Do not
conduct this test on the open road. A large, empty parking lot is suitable.
Failure to observe this precaution may result in damage to the vehicle and
possible personal injury.
2004 Hummer H2
2004 RESTRAINTS Seat Belts - Hummer H2
4. If the seat belt retractor does not operate as described, replace the retractor assembly. Refer to the
following procedures:
z
Seat Belt Retractor Replacement - Left Front
z
Seat Belt Retractor Replacement - Right Front .
z
Seat Belt Retractor Replacement - No. 1 Rear
SYMPTOMS - SEAT BELTS
Visual/Physical Inspection
z
Inspect for aftermarket devices which could affect the operation of the Seat Belt System. Refer to
Checking Aftermarket Accessories in Wiring Systems.
z
Inspect the easily accessible or visible system components for obvious damage or conditions which could
cause the symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for
Intermittent Conditions and Poor Connections in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
z
Fasten Safety Belt Indicator/Chime Always On
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Fasten Safety Belt Indicator/Chime Inoperative
FASTEN SAFETY BELT INDICATOR/CHIME ALWAYS ON
Fasten Safety Belt Indicator/Chime Always On
IMPORTANT: Review the Seat Belt System Description and Operation in order to familiarize
yourself with the system functions. Refer to Seat Belt System Description and
Operation .
Step
Action
Yes
No
Schematic Reference:Seat Belt Schematics
Connector End View Reference:Seat Belt Connector End Views
1
Did you review the Diagnostic Starting Point - Seat Belts?
Go to
Step 2
Go to Diagnostic Starting
Point - Seat Belts
2
Did you perform the Diagnostic System Check - Instrument
Cluster?
Go to
Step 3
Go to Diagnostic System
Check - Instrument
Cluster
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
2004 Hummer H2
2004 RESTRAINTS Seat Belts - Hummer H2
FASTEN SAFETY BELT INDICATOR/CHIME INOPERATIVE
Fasten Safety Belt Indicator/Chime Inoperative
3
3. Fasten the LF seat belt.
4. With a scan tool, observe the seat belt buckled
parameter in the instrument panel cluster (IPC) data
list.
Does the scan tool indicate that the seat belt is buckled?
Go to
Step 8
Go to Step 4
4
1. Disconnect the LF seat belt switch connector.
2. With a scan tool, observe the seat belt buckled
parameter in the instrument panel cluster (IPC) data
list.
Does the seat belt parameter change state?
Go to
Step 5
Go to Step 6
5
Replace the LF seat belt switch. Refer to Seat Belt Buckle
Replacement - Front .
Did you complete the replacement?
Go to
Step 9
-
6
Test the signal circuit of the seat belt switch for a short to
ground. Refer to Circuit Testing and Wiring Repairs in
Wiring Systems.
Did you find and correct the condition?
Go to
Step 9
Go to Step 7
7
Replace the inflatable restraint sensing and diagnostic module
(SDM). Refer to Inflatable Restraint Sensing and
Diagnostic Module Replacement
Did you complete the replacement?
Go to
Step 9
-
8
Replace the IPC. Refer to Instrument Panel Cluster (IPC)
Replacement in Instrument Panel, Gauges and Console.
Did you complete the replacement?
Go to
Step 9
-
9
Operate the system in order to verify the repair.
Did you correct the condition?
System
OK
Go to Step 2
Step
Action
Yes
No
Schematic Reference:Seat Belt Schematics
Connector End View Reference:Seat Belt Connector End Views
1
Did you review the Diagnostic Starting Point - Seat
Belts?
Go to Step 2
Go to Diagnostic
Starting Point - Seat
Belts
2
Did you perform the Diagnostic System Check -
Instrument Cluster ?
Go to Step 3
Go to Diagnostic
System Check -
Instrument Cluster
1. Turn ON the ignition, with the engine OFF.
2. Observe the seat belt indicator illumination during
2004 Hummer H2
2004 RESTRAINTS Seat Belts - Hummer H2
SEAT BELT SERVICE PRECAUTIONS
3
bulb check.
Does the seat belt indicator illuminate during bulb
check?
Go to
Symptoms -
Seat Belts
Go to Step 4
4
1. Install a scan tool.
2. Unfasten the LF seat belt.
3. With a scan tool, observe the seat belt buckled
parameter in the instrument panel cluster (IPC)
data list.
Does the scan tool indicate that the seat belt is
unbuckled?
Go to Step 5
Go to Step 6
5
Replace the IPC. Refer to Instrument Panel Cluster
(IPC) Replacement in Instrument Panel, Gauges and
Console.
Did you complete the replacement?
Go to Step 11
-
6
1. Disconnect the LF seat belt switch connector.
2. With a scan tool, observe the seat belt buckled
parameter in the instrument panel cluster (IPC)
data list.
Does the seat belt parameter change state?
Go to Step 7
Go to Step 8
7
Replace the LF seat belt switch. Refer to Seat Belt
Buckle Replacement - Front .
Did you complete the replacement?
Go to Step 11
-
8
Test the signal circuit of the seat belt switch for an open
or high resistance. Refer to Circuit Testing and Wiring
Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 9
9
Test the ground circuit of the seat belt switch for an
open or high resistance. Refer to Circuit Testing and
Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 10
10
Replace the inflatable restraint sensing and diagnostic
module (SDM). Refer to Inflatable Restraint Sensing
and Diagnostic Module Replacement
Did you complete the replacement?
Go to Step 11
-
11
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
IMPORTANT: If the vehicle has been in a collision, refer to Repairs and Inspections
Required After a Collision for additional information.
2004 Hummer H2
2004 RESTRAINTS Seat Belts - Hummer H2
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