New rear shocks will only feature Auto-level, but new Dorman compressor has connections for both Air Suspension features...

(2007 Denali 6.2 AWD) Installing a new Dorman compressor along with rear air shocks that only have one air connection, the leveling function. My question is about the extra air line coming off the compressor that will not be connected? I want to think that both lines will be closed until they are connected. Is that correct? If not, how do I close off the line that will now not be in use?

11bravo said:

(2007 Denali 6.2 AWD) Installing a new Dorman compressor along with rear air shocks that only have one air connection, the leveling function. My question is about the extra air line coming off the compressor that will not be connected? I want to think that both lines will be closed until they are connected. Is that correct? If not, how do I close off the line that will now not be in use?

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I replaced my compressor with a Dorman compressor, but I don't recall a second air line. Can you take a couple of photos for what you are talking about and post them here?

One air line should leave the compressor and connect to the existing air line, which eventually tees and feed both rear shocks.

I did the job yesterday, and did not read this until this morning. I'm going to get under there tomorrow to check that the bags are filling, and will get a pic then. One of the lines was black, and the other white. I connected the black line, and the left the white one alone.

11bravo said:

I did the job yesterday, and did not read this until this morning. I'm going to get under there tomorrow to check that the bags are filling, and will get a pic then. One of the lines was black, and the other white. I connected the black line, and the left the white one alone.

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BTW, post a photo or 2 of your dog on our Dogs and Puppies thread.

I cannot get a pic of the small air tubes without pulling the wheel and liner...not ready to do that again yet. The compressor I took off did have two tubes, one white and one black. So, I have no idea where the second tube is supposed to go. I will get in there at some point, but working on a lot of things in on the new-to-me SUV.

Are your air bladders inflating?

Joseph, they are not inflating. I can hear the compressor run for about 7 seconds, but the bladder is still soft. I have put a few pics on here for you. One shows the white-line connector, which is not connected to anything. The other shows the black-line connector, which is connnected to the air shock. The original shocks I removed also had only one connector fitting on each shock. The compressor is the one specified by Dorman for the 2007-14 Yukon Denali 6.2L. The compressor that was removed (made by Delphi) had only one air fitting,\ with a black air line connected, which is why I chose to connect the black line, not the white. I am attaching two pics for you. One shows the not-connected white line, and the other shows the connected black line. thank you for any input you can give.

11bravo said:

Joseph, they are not inflating. I can hear the compressor run for about 7 seconds, but the bladder is still soft. I have put a few pics on here for you. One shows the white-line connector, which is not connected to anything. The other shows the black-line connector, which is connnected to the air shock. The original shocks I removed also had only one connector fitting on each shock. The compressor is the one specified by Dorman for the 2007-14 Yukon Denali 6.2L. The compressor that was removed (made by Delphi) had only one air fitting,\ with a black air line connected, which is why I chose to connect the black line, not the white. I am attaching two pics for you. One shows the not-connected white line, and the other shows the connected black line. thank you for any input you can give.

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Have to TAG @Joseph Garcia like this if you want to be sure he sees your post.

11bravo said:

Joseph, they are not inflating. I can hear the compressor run for about 7 seconds, but the bladder is still soft. I have put a few pics on here for you. One shows the white-line connector, which is not connected to anything. The other shows the black-line connector, which is connnected to the air shock. The original shocks I removed also had only one connector fitting on each shock. The compressor is the one specified by Dorman for the 2007-14 Yukon Denali 6.2L. The compressor that was removed (made by Delphi) had only one air fitting,\ with a black air line connected, which is why I chose to connect the black line, not the white. I am attaching two pics for you. One shows the not-connected white line, and the other shows the connected black line. thank you for any input you can give.

Click to expand...

neither one of those photos are of the pump, all you had to do was remove the old shocks, install the new ones, reconnect the air line, same with the pump remove the old one, install the new one re connect the existing air lines, the new air line can be thrown out or kept as a spare should you ever need it for some reason

The compressor comes with a T fitting, and your truck also has the same T. The white line goes to the compressor and the 2 other ends of the T go to the 2 lines that attach to the shocks. Sounds like you now have 2 T’s if you didn’t replace your stock one and instead hooked up the new T to the old T. In which case you now have an open end of the new T which just releases all the air so your shocks wont inflate. Either locate and replace the old T with the new one or (easier) remove the new T and connect the white line from the old T directly to the compressor., Here’s the original T off my truck. I replaced it with the Dorman one but in all reality I should have just left the original one on as the Dorman one was a PIA to get on. make sure you are only using one T, either the new one or the old one. Definitely not both at the same time. White line= compressor to T. Black lines= T to lines that go to the shocks.