Just looked at my latest OnStar mag and it contained an article about using remote diags when the check engine light came on.

Now I don't know how good these diags are and how useful they would be since I've never used them on any of my Devilles.

But the interesting thing is tht the mag contined a statement saying that the remote diags were not availble on SRX-V8s. Is there some rationale behind this or is this just another Cadillac heritage item the SRX design team was unaware of.