CAUTION: Be careful when you handle a sensing and diagnostic module (SDM). Do
not strike or jolt the SDM. Before applying power to the SDM:
| • | Remove any dirt, grease, etc. from the mounting surface |
| • | Position the SDM horizontally on the mounting surface |
| • | Point the arrow on the SDM toward the front of the vehicle |
| • | Tighten all of the SDM fasteners and SDM bracket fasteners to
the specified torque value |
Caution: If any water enters the vehicle's interior up to the level of the carpet
or higher and soaks the carpet, the sensing and diagnostic module (SDM) and
the SDM harness connector may need to be replaced. The SDM could be activated
when powered, which could cause deployment of the air bag(s) and result
in personal injury. Before attempting these procedures, the SIR system must
be disabled. Refer to Disabling the SIR System.
With the ignition OFF, inspect the SDM mounting area, including the
carpet. If any significant soaking or evidence of significant soaking is
detected, you must perform the following tasks:
- Remove all water.
- Repair the water damage.
- Replace the SDM harness connector.
- Replace the SDM.
Failure to follow these tasks could result in possible air
bag deployment, personal injury, or otherwise unneeded SIR system repairs.
Removal Procedure
- Disable the SIR system. Refer to
Disabling the SIR System
.
- Remove the floor console, if equipped, Refer to
Front Floor Console Replacement
in Instrument Panel, Gages
and Console.
- Cut an "X" in the carpet over the inflatable restraint
sensing and diagnostic module (SDM).
- Fold the carpet back to expose the SDM.
- Remove the connector position assurance (CPA) (4) from
the SDM harness connector (3).
- Disconnect the SDM harness connector (3) from the SDM (2).
- Remove the SDM mounting
fasteners (1).
- Remove the SDM (2) from the vehicle.
Important: The following repair procedure should only be used in the event that
the inflatable restraint sensing and diagnostic module (SDM) mounting studs
and/or fasteners are damaged to the extent that the SDM may no longer
be properly mounted.
- Repair the fasteners using the following procedure:
| 9.1. | Remove the stripped nut and discard the nut. |
| 9.2. | Drill out the weld spots to the weld stud from the floor pan side,
then remove and discard the stud. |
| 9.3. | Condition the floor panel attaching surface where the new stud
is to be installed. |
| 9.4. | Install the new weld stud GM P/N 115115602 and clamp
the weld stud. |
| 9.5. | Migweld the stud at the drilled holes from above or below the
floor pan, as required. |
| 9.6. | Apply body sealer GM P/N 9984248 around any exposed
openings. |
| 9.7. | Install a new fastener GM P/N 11515933. |
Installation Procedure
- Install the SDM (2) to
the vehicle.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the SDM mounting fasteners (1).
Tighten
Tighten fasteners to 12 N·m (106 lb in).
- Install the SDM harness connector (3) to the SDM.
- Install the connector position assurance (CPA) (4) to the
SDM harness connector.
- Tape the cut carpet to cover the inflatable restraint sensing
and diagnostic module (SDM).
- Install the floor console, if equipped. Refer to
Front Floor Console Replacement
in Instrument Panel, Gages
and Console.
- Enable the SIR system. Refer to
Enabling the SIR System
.
