NHTSA Complaint #11536959 — 2017 GMC ACADIA

This is a known issue with GM 2016-2019 various models including my 2017 Acadia . the shift mechanism does not know that it is in Park position and so indicates "shift to park" on dashboard lights. Therefore ignition switch stays on and accessories that are on will run battery down in a couple of hours. Sometimes the engine will not cut off until you turn it on and off many times. The dealer estimates cost to fix of between $500 and $700. They want an additional $125 for diagnosis, which they already know problem. I found the Service Bulletin on it (19-NA-206) which calls for $42.43 in parts and 1.4 hrs labor. Many people are being ripped off on this problem, which should be a manufactor's recall ! They continued to use defective parts for years after they were aware of this hazard. Please HELP ! I don't think that I should have to pay for this repair!