This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
Transmission shifts are very rough in slow traffic with as much as one to two second delays in shifting into gear with a loud thump. It is so rough that it feels like someone may have ran into the your back bumper. It is also bad enough that it startles the driver and could be a safety issue. GM is saying that this is normal for this eight speed transmission. If my car, the one I'm driving now, had this same problem I would definitely replace the transmission. This is a 2017 denali with less than 5000 miles on it. Online there are many complaints about this and it seems that GM is trying to wait the public out now that the new vehicles have a new ten speed transmission. The dealer told me they could not fix the problem and we would have to live with it. Again, this to me is a major safety issue.
- Broken Arrow, OK, USA
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- Broken Arrow, OK, USA