I have an appointment scheduled for next week for a chip retrofit and your question got me looking into it. Some background. I took delivery of my refreshed Sierra AT4 in May missing the heated seats, heated steering wheel and parking sensors features. A couple of weeks ago I went to my dealer inquiring when I will get the chips for these features and was told to wait for a letter from GM, that the retrofit is vin specific and that it was out of their hands. I got impatient last week and tried the GM chat looking for an answer. They told me the letter had been mailed a couple weeks ago and that my registered address is probably inaccurate. It is not. I was also told the recall to retrofit was approved for my vin and I can just call the dealer and schedule it. Which I did. Good thing I didn't wait on the letter. However I mistakenly thought all of the chips missing on my truck were getting installed and my heated seats, steering wheel and parking sensors would then work. Looking at the appointment I realize only the heated seat chips will be installed (Recall Program# N212354522). So after your comment and my subsequent research it looks like I will have to do this again for a recall/retrofit on the parking sensors and then again for the heated steering wheel. This is getting ridiculous and making me rethink my long loyalty to GM (2 Tahoes, 3 Yukon Denalis, 2 Sierra Denalis). I cannot even imagine my frustration if I had the same ordering delivery (non delivery) experience expressed by other posters here. Maybe the unthinkable for me....a Toyota, Ford or RAM in my future?
