Re: "Service side detection system"
I have some of the same problems that started over 2 months ago. Mine is a 2013 Denali with only 27,000 miles on it. Took it to the dealer and they said they needed a part, which part I do not not know. Said they had to order it, OK, waited a month and went back, part still backordered. Now its been another month, nothing. Mine started with the side detection system light on. Then the turn signal started about a month later, acted up like yours. I am going to go back to the dealer to find out what the **** is going on. Luckily mine is still under warrantee.
Don't we have a GMC person that monitors this website? We need he/she to find out if GMC is having a problem with this. And why are the parts not available.
2013 Acadia Denali Iridium/Cocoa Dune<br />2011 Cadillac CTS Coupe White<br />2008 Dodge Nitro R/T Black