Another Air Suspension Question

By hereandthere
July 8, 2011 in Ask A GM Technician

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hereandthere

Posted July 8, 2011

Hi,

New to the forum. Thanks in advance for all the help. 2003 Denali with Z55 autoride. Seems like I am suffering through the diagnostics process like countless others.

Pump stopped working and have dash message.

fuses ok

pump works on bench

relay is ok

height sensors ok

"No ground" condition at ALC relay.

Do I check relief valve soleniod by jumping blue and white wire at pin connector?

Do I check hi-pressure switch by jumping orange to green at the switch harness?

Anything else to check?

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