My 2006 pontiac g6 wont start due to the passenger airbag module getting wet once or is something else not letting the car start?

There's a good chance the flexible brake hose on that side has collapsed on the inside so I would change it before looking at the brake module.

2006 Pontiac G6 Code P1516 Manf Cntrl Veh Spd Idle Speed

get a code reader and find out specifically what the problem is. It's definately not the module bacause the module is located in front of the center console. you might have gotten the wires wet.

usually it's an indication that the passenger airbag is activated but the seat belt isn't buckled... usually due to the activation of the seat weight switch... got a dog sitting in the seat?

Yes!!! You can replace it yourself.(Dont let others fool you into paying extra or telling you otherwise.)
-This is for pontiac grand ams 1999-2005 only.
-There are no frontal airbag impact sensors nor are there belt tensioners.
-The SRS system consists of only the (driver airbag) ,(passanger airbag),and the (airbag control module) in 1999-2005 grand ams.

If you crash/wrecked and airbags deployed you will need.
-Driver and Passanger airbags
-Airbag control module

You can buy cheap airbags from a local junkyard any year from 1999-2005 will fit.
You can also find an airbag control module for cheap at your local junk yard BUT YOU MUST FIND ONE WITH THE SAME (PART NO.) AND (SERV NO.) AS THE ONE YOUR REPLACING.The (part no.) and (serv no.) should be at top left of airbag control module.However it does (Not) have to match numbers under barcode or the numbers at the far bottom right of airbag control module.

After you get both airbags and airbag module
-Disconnect car Battery
-Replace airbags
-Replace airbag module (under passanger seat)
-Double check all connections and connect battery.

Congradulations!Your airbags should be back online.

Notes: Two torx 35 head screws hold the driver airbag, access is through two holes behind steering column.
To remove passanger airbag you have to remove glovebox it uses (7mm)screws.After you remove you will see a pair of (10mm)screws holding airbag.
To remove airbag control module First remove passanger seat 2(15mm).Then after removing you will notice a raises area kinda like a vertical bump.Take a razor blade to your carpet and cut it to explose the module underneath.
The airbag module is held by three screws depending on the year of your car it varies.Most likely 3 (10mm).

the passenger switch need to be replaced

All kinds of repair manuals are available here.Have a look of this may be you will get something useful.
pontiac

sounds like the passenger classification sensor in the passenger seat is bad. depending on the mileage of your car this should still be under warranty take to a gm dealer and get it fixed for free. also when this happens look at the passenger airbag off light usually located of the rear view mirror of gm cars, if this light says "on" and no one is in the passenger seat that the sensor is definately bad or if you are a woman and have a heavy purse on the seat this will also cause this because the car thinks someone is sitting in the seat without a seatbelt on.

You need to grease the steering knuckle

Thanks for the help but, I just have to wait till monday now because all the shops are closed. I have to find out why my check engine light is on first.