Engine-Codes - Gmc - B0079 GMC

B0079 GMC Code - Driver Seat Position Sensor Circuit

- Code Popularity: 7,431 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B0079 GMC?

  • Faulty Driver Seat Position Sensor
  • Driver Seat Position Sensor harness is open or shorted
  • Driver Seat Position Sensor circuit poor electrical connection
  • Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)

|How to Fix the B0079 GMC Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Code B0079 GMC Tech Notes

B0079:01 Driver Seat Position Sensor Circuit Short to Battery
B0079:02 Driver Seat Position Sensor Circuit Short to Ground
B0079:04 Driver Seat Position Sensor Circuit Open
B0079:05 Driver Seat Position Sensor Circuit High Voltage or Open
B0079:06 Driver Seat Position Sensor Circuit Low Voltage or Open
B0079:08 Driver Seat Position Sensor Circuit Performance-Signal Invalid
B0079:0C Driver Seat Position Sensor Circuit Low Current

|What is the Cost to Diagnose the Code B0079 GMC?

Labor: 1.0

The cost to diagnose the B0079 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B0079 GMC Possible Symptoms?

  • Air Bag Warning Light ON

|What Does the B0079 GMC Code Mean?

The seat position sensor is used to determine the proximity of the front driver or passenger seat position with respect to the front air bag. There are two states of seat position, forward and rearward. The seat position sensor interfaces with the Inflatable Restraint Sensing and Diagnostic Module (SDM) and allows the inflatable restraint sensing and diagnostic module to disable stage 2 of the air bag for a front seat that is forward of the forward/rearward point in seat track. The seat position sensor provides two current ranges, one range for the forward seat position and one for the rearward seat position. When the Inflatable Restraint Sensing and Diagnostic Module receives input from a seat position sensor that the seat is rearward, and the inflatable restraint sensing and diagnostic module will not disable stage 2 deployment. When the seat is forward, the Inflatable Restraint Sensing and Diagnostic Module will disable stage 2 deployment. The inflatable restraint sensing and diagnostic module monitors the seat position sensor circuit and if a fault is detected, the Inflatable Restraint Sensing and Diagnostic Module will set Diagnostic Trouble Code (DTC) B0079 and disable stage 2 frontal deployment.

Driver Seat Position Sensor Circuit

|Need more Information on the B0079 GMC Code?

Need more information on how to fix the B0079 GMC code? Get Access to Factory Service Manuals

|Need Help with the B0079 GMC Code?

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.