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GL lost the contracts because the gov put them out to bid and GL was outbid. GL could have stepped up and bid higher.

I dont think there is a hole. From looking at a trans and taking the above pic I think its a trick of the light.

They are brainstorming trying to figure out a way to maximize profit on the stuff. And they will with the generators and new engines. Stuff like that. But with the parts they are mostly just a bunch of parts. Nobody needs any of it until they need it. GP is paying the gov more than GL did. The...

Pic taken at same angle as the trans one in question.

I believe its a resistance based sender. Higher pressure equates to more resistance. I could have it backwards though.

Tank switch or pressure sender on pneumatic valve?

Could be the air hyd pump needs a rebuild. Do you see any puffs of vapor coming out of the vent on the pump when its running?

Chock the truck well both ends. I mean well. Not near anything else. Air up release the brakes. You can peek in and see which pad or pads are sticking. Each pad has a small notch at the ends. Use long screwdriver and mallet tap on the notch the pad will pop free the truck may jump a bit so be...

Its a variable resistance sender.

You could take it off and make sure no gunk on the end. Blow it out with air. Make sure you have good air feed flow to the valve body. I dont know the measurements to take on it. I usually use the swap it out method.

Take it apart and investigate. If there is a short or bad connection somewhere you will get a fault. But it shouldn’t affect data communication with the diag.

Bad or unplugged transducer. Drop the passenger kick panel and look at the manifold. See if anything visible going on.

Two different issues. You can jump the pressure switch on the side of the air tank with a paperclip. Could be a bad ecu. They go bad all the time. Easiest way to diag that is swap a known good one in.

Over the counter part. Service the air dryer. May be compressor unloader needs a rebuild.

More of a solenoid pack. Which is replaceable. Trans damage is common from driveshafts coming loose. It isnt a clear pic and something like a hole in the trans should be clearly pictured and described.

Looks like it went thru a refurb/reman

I thought they were airlift points

You want to see around 125 at governed pressure. As the air is building, once you reach governed pressure, the governor sends an air signal to the unloader valve on the compressor to stop making pressure and also to the air dryer to purge built up moisture out the bottom expello valve. The...

I’m sure you paid good money for the truck. The harness damage may be something that should have been caught during inspection. Especially if it was cut.

Most of the led headlights are dual volt will work with 12 or 24volt.