My air suspension isn't turning on anymore on 2007 Chevrolet Avalanche

I have a 2007 ltz avalanche and the air suspension used to come on for about 10 seconds every time I would start it but for the past few weeks it doesn't turn on and I dont get any warnings that something is wrong. What gives?

by in Minneapolis, MN on August 09, 2013
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1 answer
ANSWER by , August 11, 2013
Is the level of the truck alright?