[ferret]

My truck sometimes does not want to lower itself, I can manually raise it but it wont come down manually or automatically unless I stop and restart the truck and even that may take a few tries. Sound like a the driver is going bad? Maybe a sensor? Also it's sometimes makes a pinging noise from the valve block area when I park it after a long ride.

 

[Stephen J]

Spot on. No leaks?

 

[shupack]

does the compressor continue to run when trying to lower?

 

[ferret]

no leaks and the crompressor does not run when lowering

 

[996TURBO]

Had the problem once, another drive box did the trick

 

[shupack]

yep, sounds like a drive-box.