Where can i put air back in the air bags i was told you can go to the gas station and replace air wheres the air line

there is no such thing (at the fuel pump)
post a real problem with evidence
I have this car, and have full documentation on it.
my wild wild wild guess is engine does not start and run?
not told problem. (of vast possible)
the word is Inertial ( as in crash) and yes air bags deployed can do that, but that is air bag problem.
were you in a CRASH or collision? no clues yet.
here are the steps.(just 1 of many)
check all fuse first, cab and bay. F24 is fuel pump power.
then scan the PCM at the left knee 16pin DLC scanner port OBD2.
USA cars here or Canada, I do not do outside USA anything.
the 3 engines are 3.6/4.7/ 5.7Liter (gas,gas,diesel)
is the security LED glowing? wrong in the speedo cluster? oops? if yes. tell that.
not using a scan tool at failures. the car even reports blown fuses and which one, and vast other things , not scanning will be costly.
the MPC runs the fuel pump relay and the relay runs the pump.
there is no inertial switch in this path at ALL. page 3006 service manual real from Jeep)
if AIR bags (SRS) trip
the fuel relay is controlled by the MPC, brain, and MPC controls it;
via CANbusnetwork communications.
so if you do not scan it you can not learn who cut fuel nor why.
that is how this car is DIAGNOSED.
MPC = module powertrain control above is GAS not diesel 5.7L
no engine told
no country told
no problem told,
fail.

Generally a leaking line will not pump up, much like a punctured balloon. A spray bottle of soapy water will be your friend discovering the issue.
If the bag does not raise at all, check to see that the pump continues to run. If it cycles, then adjust the control's position. Follow the air lines from the bags.
If the air pump runs constantly, then you have a major leak, a damaged air line, omitted O-ring, etc.
The most common problem with leaking air bags is not the bag itself. The most frequent issue is the O-ring on the air lines. I will assume that the new bags came with new O-rings? Did you replace the ones at the pump and at the Tee? O-ring problem are usually slow, sometimes over night.
Hope this helps.

Which sensor?

change fuel filter bleed air out of fuel lines on fuel line

Do you hear the compressor coming on when you start the truck or a few minutes into your ride? If so, you can rule out the compressor.

Could be ride height sensors, air spring bag leaks, or a leak in the air line(s). The dealership will ROB YOU BLIND if you let them.

See if a local mechanic will detatch and clean those sensors. Sometimes they'll corrode from time and weather.

If your air spring bags are bad, just google the part and you'll find the part for around $200. Have a mechanic also check the SEALS at the top of the air spring bag. Sometimes they expand and shrink with the weather and the air escapes from the bag, causing it not to inflate as it should or not at all. It's a really cheap fix if it's only the seals.

Any mechanic can test your air lines for leaks with regular soapy water. If you have leaks, the lines are easy to replace and not expensive.

Hope this helps.

More than likely you have an inner leak in one of the strut assem. in rear.

Clutch slave cylinder, yes it may be bad, sure sounds like it.

Open the driver side door, Theres a fuse access there. Follow the Yellow-jacketed electrical line.

either end , but battery must be disconneted as air bag are dangerous,i find it easier to remove the air bag side which just pulls outallowing you to put air bag well out of the way.

Sounds like it needs more air in bags. Add air and squirt really soapy water over bags and attached lines to find leak. May have to replace bag/bags or feed line from pump. I would think it would be a feed line if car stays up with switch off.