airbag

[luisespo60]

Hi guys I have 2007 gmc sierra slt with code B 0079 B 0081 , any body can help me on this one , thanks

 

[Molson02536]

Hi guys I have 2007 gmc sierra slt with code B 0079 B 0081 , any body can help me on this one , thanks

B0079 Left Front Seat Position Sensor Circuit

B0081 Passenger Presence System

DTC B0077, B0078, B0079, B0080, B0081, or B0082
Left Front/Driver Side Impact Sensor (SIS) Circuit

Service Information 2007 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1892094 #07-09-41-002: Air Bag Light On, DTC B0081 Set (Clear DTC Using Specific Procedure) - (Jan 29, 2007)

Subject:Air Bag Light On, DTC B0081 Set (Clear DTC Using Specific Procedure)

Models:2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL

Condition:
Some customers may comment on the airbag light being illuminated. Upon investigation, the technician may find DTC B0081 with symptom code 0F, 3A, 39 or 71 set.

Correction:
The Sensing and Diagnostic Module (SDM) should NOT be replaced when DTC B0081 sets. The SDM sets DTC B0081 only to report that there is no communication with the Passenger Presence System (PPS) module or that the PPS module has reported a fault. It is important that when the B0081 fault is reported by the SDM, the DTCs from the PPS be retrieved and addressed first per the procedure below. After the PPS module DTCs have been addressed, turn the ignition off, open the driver's door, and wait 40 seconds for the PPS module to go to sleep.

1. When DTC B0081 71 sets, inspect wiring and connections for a possible loss of communication between the SDM and PPS module. Inspect front passenger seat connector to the PPS module and seat connector to the seat harness.

Do not replace the SDM module for a DTC B0081 71 condition. The SDM will set B0081 3A indicating that a wrong PPS module has been installed on the vehicle. Verify the condition before replacing the known wrong PPS module with a correct one. Use service information to reprogram and set up a new PPS module.

The SDM will set B0081 0F and B0081 39 indicating that the PPS module has reported a fault to the SDM. Retrieve the DTCs from the PPS module and address those first. The PPS may continue to send it has a fault to the SDM for the above conditions, though there are no active faults reported by the PPS, until the steps in the note below are taken.

Important: DTC B0081 will not clear until the low speed bus goes to sleep. To clear DTC B0081, turn the Ignition off, open the driver's door and wait 40 seconds for the PPS to go to sleep. Turn the ignition to run and retrieve vehicle DTCs. If all the codes have been cleared from the PPS, DTC B0081 in the SDM will not be active and only be in history.

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

C9709*

Procedure to Clear DTC B0081 from SDM.

0.5 hr

* This is a unique labor operation number for bulletin use only. This number will not be published in the Labor Time Guide.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.


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Hope this helps and keep us posted.

 

[luisespo60]

Hi Molson , thanks for the fast response , your help is very much appreciated , now I have an idea what to look for .
I will post what was the fix .
Thanks again .