Vehicle is a 2004 Yukon denali.

It works great but every now and then the message center says stability system disabled and it goes into reduced engine power. It lasts until I turn truck off for half hour then goes back to normal. It's getting anoying. Only supsension mod done was 3" drop springs and cut the ride level sensors as per instructions. Help me out.

 

I would think that the ride level sensors would be part of the stability system. Is this something that just started to happen right after you lowered it or was it lowered before and several months later started throwing the code?

 

Happend several months after.

 

Any way for you to read the codes in the ECM or VSES systems. I have had the same concerns before at work but cant remember off the top of my head what they were

 

REP is usually throttle/airflow related. The codes should help. Turning the key off for 15 sec should clear it unless the condition that triggered it is still present.