CAUTION: When you are carrying an undeployed seat belt pretensioner:
• | Do not carry the seat belt pretensioner by the wires or connector
on the pretensioner. |
• | Do not touch the seat belt pretensioner in the area of the cable
(1). |
• | Do not cover the tube opening with your hand. |
• | Keep the open end of the tube pointed away from you. Do not point
the open end of the tube at another person. |
• | When the pretensioner deploys the cable retracts. This shortens
the pretensioner between the buckle and the mounting bolt. Grasp the pretensioner
by the piston tube (2). |
Disregarding these precautions may result in personal injury or unnecessary
SIR system repairs.
Live (Undeployed) Seat Belt Pretensioner
Take special care when handling or storing a live (undeployed) seat
belt pretensioner. A seat belt pretensioner deployment produces rapid gas
generation. This may cause the seat belt pretensioner, or an object in front
of the seat belt pretensioner, to jettison through the air in the event of
an unlikely deployment.
Shipping Procedure
Refer to the latest service bulletins for proper shipping procedures.
Scrapping Procedure
During the course of a vehicle's useful life, certain situations may
arise which will necessitate the disposal of a live (undeployed) pretensioner.
The following information covers the proper procedures for the disposing
of a live pretensioner. Deploy the pretensioner before disposal. Do not dispose
of a live pretensioner through normal disposal channels.
CAUTION: In order to prevent accidental deployment of the pretensioner which
could cause personal injury, do not dispose of an undeployed pretensioner
as normal shop waste. The undeployed pretensioner contains substances that
could cause severe illness or personal injury if the sealed container is damaged
during disposal. Use the following deployment procedures to safely dispose
of an undeployed pretensioner. Failure to dispose of a pretensioner as
instructed may be a violation of federal, state, or local laws.
Do not deploy a pretensioner in the following situations:
• | After replacement of a seat belt pretensioner under warranty.
The seat belt pretensioner may need to be returned undeployed to the original
manufacturer. Refer to the latest service bulletin regarding seat belt pretensioner
shipping procedures. |
• | If the vehicle is the subject of a Product Liability report related
to the SIR system and is subject to a Preliminary Investigation (GM-1241),
do not alter the SIR system in any manner. Refer to the latest service bulletin
on SIR shipping procedures. |
• | If the vehicle is involved in a campaign affecting the seat belt
pretensioners, follow the instructions in the Campaign Service Bulletin for
proper SIR handling and shipping procedures. |
Deployment Procedures
The seat belt pretensioner can be deployed inside or outside of the
vehicle. The method used depends upon the final disposition of the vehicle.
Review the following procedures in order to determine which will work best
in a given situation:
Deployment Outside Vehicle - Seat Belt Pretensioners
Tools Required
• | An appropriate pigtail adapter |
CAUTION: In order to prevent accidental deployment of the pretensioner which
could cause personal injury, do not dispose of an undeployed pretensioner
as normal shop waste. The undeployed pretensioner contains substances that
could cause severe illness or personal injury if the sealed container is damaged
during disposal. Use the following deployment procedures to safely dispose
of an undeployed pretensioner. Failure to dispose of a pretensioner as
instructed may be a violation of federal, state, or local laws.
CAUTION: When you are deploying a pretensioner for disposal, perform the deployment
procedures in the order listed. Failure to follow the procedures in the order
listed may result in personal injury.
Deploy the seat belt pretensioners outside of the vehicle
when the vehicle will be returned to service. Situations that require deployment
outside of the vehicle include:
• | Using the SIR diagnostics, you determine that the seat belt pretensioner
does not function properly. |
• | The seat belt pretensioner is scratched or damaged. |
• | The seat belt pretensioner pigtail harness is damaged. |
• | The seat belt pretensioner connector is damaged. |
• | A seat belt pretensioner connector terminal is damaged. |
Deployment and disposal of a malfunctioning seat belt pretensioner is
subject to any required retention period.
- Turn the ignition to the
OFF position.
- Remove the ignition key.
- Put on safety glasses.
- Inspect the J 38826
and the appropriate pigtail adapter for damage. Replace as needed.
- Short the two SIR deployment harness (1) leads together using
one banana plug seated into the other.
- Connect the appropriate pigtail adapter (2) to the SIR deployment
harness (1).
CAUTION: When you are carrying an undeployed seat belt pretensioner:
• | Do not carry the seat belt pretensioner by the wires or connector
on the pretensioner. |
• | Do not touch the seat belt pretensioner in the area of the cable
(1). |
• | Do not cover the tube opening with your hand. |
• | Keep the open end of the tube pointed away from you. Do not point
the open end of the tube at another person. |
• | When the pretensioner deploys the cable retracts. This shortens
the pretensioner between the buckle and the mounting bolt. Grasp the pretensioner
by the piston tube (2). |
Disregarding these precautions may result in personal injury or unnecessary
SIR system repairs.
- Remove the seat belt pretensioner from the vehicle. Refer to
Seat Belt Buckle Pretensioner Replacement - Left Side
or
Seat Belt Buckle Pretensioner Replacement - Right Side
.
- Clear a space around a
bench vice about 1.85 M (6 ft) in diameter for deployment of
the seat belt pretensioner. Use a space free of activity. Make sure you have
sufficient ventilation.
- Make sure no loose or flammable objects are in the area.
- Clamp the seat belt pretensioner,
near the attachment bolt hole, in the vice.
- Extend the SIR deployment
harness and adapter to full length from the seat belt pretensioner.
- Place a 12 V minimum/2 A minimum power source (i.e.,
vehicle battery) near the shorted end of the harness.
- Connect the seat belt
pretensioner (1) to the adapter (2) on the SIR deployment harness (3).
- Firmly seat the adapter into the seat belt pretensioner connector.
- Clear the area of people.
CAUTION: When you are deploying a pretensioner for disposal, perform the deployment
procedures in the order listed. Failure to follow the procedures in the order
listed may result in personal injury.
- Separate the two banana plugs on the SIR deployment harness.
Important: The rapid gas expansion involved with deploying a pretensioner is very
loud. Notify all the people in the immediate area that you intend to deploy
the seat belt pretensioner.
- Connect the SIR deployment harness wires to the power source.
- Disconnect the SIR deployment
harness from the power source after the pretensioner deploys.
- Seat one banana plug into the other in order to short the deployment
harness leads.
- If the pretensioner did not deploy, disconnect the adapter and
discontinue the procedure. Contact the Technical Assistance Group. Otherwise,
proceed to the following steps.
- Put on a pair of shop gloves.
- Disconnect the pigtail adapter from the seat belt pretensioner
as soon as possible.
- Inspect the pigtail adapter and the SIR deployment harness. Replace
as needed.
- Dispose of the deployed seat belt pretensioner through normal
refuse channels.
- Wash hands with a mild soap.
Deployment Inside Vehicle - Seat Belt Pretensioners (Vehicle Scrapping
Procedure)
Tools Required
• | An appropriate pigtail adapter |
CAUTION: When you are deploying a pretensioner for disposal, perform the deployment
procedures in the order listed. Failure to follow the procedures in the order
listed may result in personal injury.
Deploy the seat belt pretensioners inside of the vehicle
when destroying the vehicle or when salvaging the vehicle for parts. This
includes but is not limited to the following situations:
• | The vehicle has completed its useful life. |
• | Irreparable damage occurs to the vehicle in a non-deployment type
accident. |
• | Irreparable damage occurs to the vehicle during a theft. |
• | The vehicle is being salvaged for parts to be used on a vehicle
with a different VIN as opposed to rebuilding as the same VIN. |
- Turn the ignition switch
to the OFF position.
- Remove the ignition key.
- Put on safety glasses.
- Remove all loose objects from the front seats.
- Disconnect the driver seat belt pretensioner 2-way connector located
at the lower LH side of the driver's seat.
- Cut the two pretensioner wires leading to the 2-way harness connector,
leaving at least 16 cm (6 in) of wire at the connector.
- Strip 13 mm (0.5 in)
of insulation from each of the pretensioner connector wire leads.
- Cut two 6.1 M (20 ft)
deployment wires from a 0.8 mm (18 gage) or thicker multi-strand
wire. These wires will be used for the driver seat belt deployment harness.
- Strip 13 mm (0.5 in) of insulation from both ends
of the wires cut in the previous step.
- Twist together one end from each of the wires in order to short
the wires. Deployment wires shall remain shorted, and not connected to a power
source until you are ready to deploy the driver seat belt pretensioner.
- Twist together one connector
wire lead to one deployment wire.
- Bend flat the twisted
connection.
- Secure and insulate the connection using electrical tape.
- Twist together, bend,
and tape the remaining connector wire lead to the remaining deployment wire.
- Connect the deployment harness to the driver seat belt pretensioner
yellow 2-way connector.
- Route the deployment harness
out of the driver side of the vehicle.
- Disconnect the passenger
seat belt pretensioner yellow 2-way connector located at the lower RH side
of the passenger's seat.
- Cut the two pretensioner wires leading to the 2-way harness connector,
leaving at least 16 cm (6 in) of wire at the connector.
- Strip 13 mm (0.5 in)
of insulation from each of the pretensioner connector wire leads.
- Cut two 6.1 M (20 ft)
deployment wires from a 0.8 mm (18 gage) or thicker multi-strand
wire. Use these wires to fabricate the deployment harness.
- Strip 13 mm (0.5 in) of insulation from both ends
of the wires cut in the previous step.
- Twist together one end from each of the wires in order to short
the wires.
- Twist together one connector
wire lead to one deployment wire.
- Bend flat the twisted
connection.
- Secure and insulate the connection using electrical tape.
- Twist together, bend,
and tape the remaining connector wire lead to the remaining deployment wire.
- Connect the deployment
harness to the passenger seat belt pretensioner 2-way connector.
- Route the deployment harness
out of the passenger's side of the vehicle.
- Clear the inside and outside of the vehicle of any people or loose
and flammable objects.
- Stretch the driver seat
belt pretensioner harness to full length.
- Completely cover the windshield and the front door openings with
a drop cloth.
- Place a power source, 12 V minimum/2 A minimum (i.e.,
a vehicle battery) near the shorted end of the harnesses.
- Separate the two ends of the driver seat belt pretensioner deployment
harness wires.
- Connect the driver seat belt pretensioner deployment harness wires
to the power source in order to deploy the driver seat belt pretensioner.
- Disconnect the driver seat belt pretensioner deployment harness
wires from the power source.
- Stretch the passenger
seat belt pretensioner harness to full length.
- Place a power source, 12 V minimum/2 A minimum (i.e.,
a vehicle battery) near the shorted end of the harnesses.
- Separate the two ends of the passenger seat belt pretensioner
deployment harness wires.
- Connect the passenger seat belt pretensioner deployment harness
wires to the power source in order to deploy the passenger seat belt pretensioner.
- Disconnect the passenger seat belt pretensioner deployment harness
wires from the power source.
- Twist together one end
of each wire on the driver seat belt pretensioner deployment harness in order
to short the wires.
- Twist together one end
of each wire on the passenger seat belt pretensioner deployment harness in
order to short the wires.
- Remove the drop cloth from the vehicle.
- Disconnect the harnesses from the vehicle.
- Discard the harnesses.
- Scrap the vehicle in the same manner as a non-SIR equipped vehicle.
- If one or both of the pretensioners did not deploy, perform the
following steps:
47.2. | Temporarily store the pretensioner(s). |
47.3. | Call the Technical Assistance Group for further assistance. |
Handling a Deployed Pretensioner
Some gas will be visible after deployment of a seat
belt pretensioner. Exposure to this gas is not a health concern. The seat
belt pretensioner can be handled immediately after deployment.