Originally Posted by scottydl
The reason it doesn't seem like a normal startup diagnostic (on my 2013) is because the light doesn't always come on / stay on for that extended length of time every time. I also get the "Service Air Bag" message on the DIC (which I forget to clarify before) while the light is on for those few extra seconds, but then it goes away as soon as the light clears. I'm not really concerned yet, because so far it all returns to normal within 5-10 seconds. It probably is a connector somewhere, at this point I'm just not interested in having to pay a shop $100 to tell me that.
That helps knowing the message appears. There is a code stored and it can point in the right direction of failure. A common problem as mentioned here is the seat connector wires.
I checked under my seats and the connectors have been cut out. They spliced the wires together evidenced by the black heat-shrink in place of the connectors.
The wiring to airbag systems is covered in a yellow jacket and has yellow connectors. The harness connector has four wires under the seat so it's easy to find.
To fix these they use a metal crimp then solder the wires then apply heatshrink. To do this it's recommended to use a butane soldering iron since the electric ones can transmit current into the wiring to the diagnostic module. Another way would be to disconnect the connector at the module then proceed with a regular iron. I usually use heatshrink butt connectors on cars but since the airbag circuits are very sensitive they want it soldered.
edit: I found the campaign info(campaigns mean NO Charge to customers) Maybe you can look under the seats to see if it's done or call your dealer for a checkout:
Campaign - Faulty Impact Air Bag Connector
# 15536: Special Coverage Adjustment - Side Impact Air Bag Connector Faulty Recall Repairs - (Aug 5, 2015)
Subject: 15536 - Special Coverage Adjustment - Side Impact Air Bag
Connector Faulty Recall Repairs
Models: 2008-2013 Buick Enclave
2008-2013 GMC Acadia
2008-2010 Saturn Outlook
2009-2013 Chevrolet Traverse
Certain 2008 - 2013 Buick Enclave, GMC Acadia, Saturn Outlook, and Chevrolet Traverse vehicles were recalled to address corrosion and/or loose crimps in the driver and passenger-seat mounted side-impact airbag (SIAB) wiring-harness connectors, which could cause an increase in resistance that may disable the SIAB, front-center airbag, if equipped, and seat-belt pretensioners. GM has received reports that, in some cases, the required repair may have been incorrectly performed by the dealer service technician. The GM recall number was N14030 (GFPE number N-140030) NHTSA recall 14V118.
Special Coverage Adjustment
Dealers are to remove the section of the wire with the faulty repair and re-connect wires. The repairs will be made at no charge to the customer.
For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after August 4, 2015, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to August 4, 2015, must be submitted to the Service Contract provider.
All involved vehicles are identified by Vehicle Identification Number on the Applicable Warranties section in GM Global Warranty Management system. Dealership service personnel should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.