Service Air Suspension...Again!!! HUMTECH

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Service Air Suspension...Again!!! HUMTECH

11-21-2008, 10:15 PM

Planohummer Planohummer is offline

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Join Date: Aug 2005

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Re: Service Air Suspension...Again!!! HUMTECH

that's the original single stage.
the amount of pressure for lifting the truck is a whole lot more than what's at the rear aux port. This may be why the pump runs ok when it's not lifting the truck.
You really need to check the DTCs before you spend any money-make sure it's not just a height sensor recal issue or something similar. Any GM store can ck the codes for you, when you get them post them on the forum and we'll decipher.

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