Yes check it out -- it's a known issue and all over the web but GM won't admit to it or fix it unless you ask. You can search for PIT5405 (it's posted on these forums) but many dealers act like they don't know it exists.
I had a dealer claim they did mine but I didn't notice any difference. I got sick of dealing with it and decided to try the fix myself. I opened the dash and looked at the ground studs on both sides. I didn't notice any insulation pinched but just to be safe I removed both ground nuts, sanded the underneath of the nuts and the dash area around the grounding posts, and then tightened both nuts down firmly. Ever since I have not had any electrical issues.