Where can the air bag impact sensor be found on a GMC Sierra 2010

That means the air bag control module see's a problem in the electrical circuit's or impact sensor etc... Light lit ,DTC- diagnostic trouble code stored . Your best bet , take it to a qualified repair shop.

I would say DON'T WIGGLE or PLAY with the wiring or sensors. Evidently u found a bad connection. T he question is it in the wiring or the sensor itself. wiggling things around may set off air bags. Erratic ground & voltage at the sensors will do it. Have it professionally checked.

the part needs to be securely mounted for it to sense impact and deploy the air bags
that can be achieved by mounting a bracket around it to hold it in place
parts can be obtained from the wreckers / junk yards or generic units from e-bay or quality auto spares shops and while the dealer says that the part is no longer available for that model , it may just have a number change and fit a later model
GM will not make the part but use a manufacturer item and place it in a GM box to inflate the price

Air bags require periodic maintenance, the light means it is due for service or not functioning correctly in which case it will not deploy in an accident. You can take it to any dealer or garage and they can service it and reset the light. no idea on the cost of repair. good-day!

no there r no servicable parts on the air bag system...u need to return the truck to a qualified service repair center for the repair....they will be able to pull air bag codes an then properly repair ur air bag system

Warranty work, get it to a dealer

the system will need to be scanned to get the code. This will pinpoint the problem. These trucks are common for crash or collision sensor failing

TAKE CAR TO DEALERSHIP.AIR BAGS IS DANGEROUS.NOT A HOME FIX.THE DEALERS HAS EQUIPMENT TO DIAGNOSE AND CHECK AIR BAGS.

Have you checked the wire harness between the seat carriage and floor connector. Have found broken wires there and has solved the problem.

The front crash sensor is on or near the radiator support under the hood, it is a little square box, one question why do you think it has a problem? it is a mechanical device, a steel ball bearing sitting in an inverted cone, when you crash the ball bearing breaks free of the magnet, that breaks a connection and signals the airbag monitor to fire the airbags, it takes a 5+ MPH impact to set all this in motion, there are side impact sensors as well, the physics of these are a little different, they are measured in G force of the impact, hope all this doesn't bore, one note the fuel that fires the air bag is made by the same folks that make rocket fuel for the solid fuel boosters of the space shuttle.