I havent experienced problems with my gauges but my keyless entry was acting really funky when I had my first PIOGM1V2 (defective) interface installed. I am on my second one and am still not happy with the performance. I am returning mine and installing a Pioneer 7480DVD xm ready reciever. Only problem is that I need a Soundgate Digistar B to interface with the Onstar. Hope the quality is better.