On my 2005 Yukon I would hookup flat bed trailer and air compressor would kick on and level off vehicle. Needed to lift trailer hitch about 2-3 inches to engage tongue to ball. I now have 2013 Tahoe. I now have to lift trailer hitch 8 inches to engage tongue to ball, and compressor does not kick on . Trailer also unleveled with nose of trailer sitting high on receiver. I ran scantool and under special tests compressor started and shutoff as commanded. There are no codes or error messages. Rear of car seems to be sitting higher than normal, but what is considered normal other than looking level. Will pull both rear tires and check height position sensors for possible problem. The shocks need to release air to lower to level car or need to change receiver to a ball with at least 4 inch drop. Either way I never see the rear shocks raise or lower the rear of car. With koeo I do hear the compressor come on and after 5-8 seconds shut off. A normal self check at startup. Anyone out there with any suggestions, give me a shout.
Thanks
Cags
Thanks
Cags