lol, ya good luck. "maybe" they have a method to externally pump it up to higher pressure to help detect a leak.
I would expect to be put at the end of the line on this one....especially being warranty
Air Suspension Leak Down after Sitting 2 Weeks
- Thread starter WalleyeMikeIII
- Start date
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I would expect to be put at the end of the line on this one....especially being warranty
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WalleyeMikeIII
Full Access Member
It did leak down afte 3 days this weekend, so I may ask them to just keep it a few days and watch it. They are providing a loaner, so we will see. I documented the issue w/ photos as well...dealers around here are pretty decent, will see.
that should make is easier to find, they could come back with "that's normal" or some crap, even though we all know it's not. good luck
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WalleyeMikeIII
Full Access Member
Pretty up to speed on most of the TSB's, there was one early in production for very cold climates...but my vehicle was built after the engineering change to resolve it. And, it is not a cold weather thing...has been plenty warm here...at least until today.
Not a good sign for a 2 year old vehicle. This makes me very wary of the air suspension (on any non-commercial application). We went to test drive a few 2024 Suburban gas variants (5.3L and 6.2L). I noticed the 2024 Suburban Z71 with Air Ride suspension's rear was lower than the front by about 2" when it was parked before the test drive. It did return to normal height at some point during the test drive.
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WalleyeMikeIII
Full Access Member
I bought the air due to my frequent towing…and for that it’s great.
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WalleyeMikeIII
Full Access Member
Well, the dealer had it today for diagnosis. Was returned as “operating at designed.”
The dealer returned a document from GM explaining the Air Suspension Operation. A pic of that document is attached. It says sag is normal to the tune of 2mm (0.08”) in 24 hours at constant temperature. So, my 1-1.5” in 72 hours exceeds that.
I’ve e-mailed my service advisor for further clarification and suggested we let it sit in their climate controlled facility for 72 hours and measure it every 24, to see if it is still in spec. Haven’t heard back.
The dealer returned a document from GM explaining the Air Suspension Operation. A pic of that document is attached. It says sag is normal to the tune of 2mm (0.08”) in 24 hours at constant temperature. So, my 1-1.5” in 72 hours exceeds that.
I’ve e-mailed my service advisor for further clarification and suggested we let it sit in their climate controlled facility for 72 hours and measure it every 24, to see if it is still in spec. Haven’t heard back.
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FIGURED AS MUCH
my advice is go out and stick a sewing needle thru that bladder a few times, then take it back and say "check it again"
but do it on the bottom edge where it rolls so it doesn't look suspicious
