* Within the driver's side airbag module: This module houses the crash sensors and is typically located under the dashboard, near the steering column. It's not something easily accessible without significant disassembly.
* Potentially within the seatbelt pretensioner: The seatbelt pretensioner on the driver's side contains sensors that contribute to the overall deployment decision. Again, this is internal and not something you'd readily see.
The exact placement and configuration of these internal sensors varies slightly depending on the specific trim level and any aftermarket modifications. You should not attempt to locate or access these components yourself. If you suspect a problem with your airbag system, you should take your Avalanche to a qualified mechanic or dealership for diagnosis and repair. Working on the airbag system incorrectly is extremely dangerous and can lead to serious injury or death.
