suspension leveling sustem

[nak811]

I have a 2017 Chevy Tahoe with a "service suspension leveling system" on my information panel.
It was diagnosed as having a C0660 code.
I replaced the pump relay along with the pump.All to no avail. There are no apparent air leaks. All connectors seem ok.
I'm at a loss. Any ideas ?
thank you

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

Check for air leaks with a spray bottle and soap/water solution. Spray the air lines and connectors to the shocks, as well as the shock bladders.