Duramax 3.0 Non-start issues ?? … SD Card Removed issues ?? … Infotainment Screen issues ??

rchurchm

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Courtland Ontario Canada
Good Morning AT4 Forum Members ,…

I wish to thank everyone for all of the info that you provided me previously to my earlier questions … your answers and suggestions were very helpful … I do have some additional issues which have surfaced since November / December 2021 … I will list them as they occurred as I keep a log book with all of my vehicles to make notes about any occurrences and service provided … regards … Rick C. … Ontario Canada

1. November 2021
A notification appears on the instrument cluster stating … “ SD Card Removed “ … basically everyday that I drive the truck … this message also appears on the infotainment screen when I access the navigation function in a different format … then the navigation function starts to load maps (which it has never done previously) only to return to the “SD Card Removed” Notification and the result is NO Navigation Function Available ?? … thank goodness for phone apps …

2. December 2021
While driving my Infotainment Screen totally shut off … “Dark Screen” for a few moments only to reappear again on a totally different radio channel and / or satellite channel … this has occurred several times since …

3. December 16th 2021
A message popped up on the Infotainment Screen stating that an Update was available to correct the “SD Card Removed” situation … I accepted the Update and let it install … it stated that once it started the update there was no need to remain in the truck for the 15 minutes it required to complete the update … so I let it finish unwitnessed by myself …

4. December 2021 ( Since Update )
The ”SD Card Removed” notification appears daily on the instrument screen since the Update … apparently the Update did not resolve this issue … the navigation function is not working with the same problem as stated earlier … the infotainment screen has randomly shut down and re-started with the same results as previously mentioned …

5. I have also had 4 “NO Start” issues since taking delivery of the AT4 3.0 Diesel on May 14th 2021 … no resolve for this at the dealership when in for service ??

6. When anyone took delivery of their new truck were you provided with an adaptor to hook up a trailer which has the older style 3 prong exposed / one prong covered style connector … I went to help a friend with his trailer and I could not help since I could not see how to connect to his trailer‘s wiring setup with our AT4 ?? … I was not made aware at the dealership that I might need to buy such an adaptor and / or be provided one as part of the original purchase ?? …

Thank You to all who have been supportive with taking the time to read my posts and provide many valuable answers … very much appreciated … Regards … Rick C.
 

There are many different trailers plugs available I wouldn't expect GM to supply an adaptor for all of them. Good luck with the other issues hopefully to dealership can resolve them
 

Hi. I had the no start issues. I found a notice from Texas where the fuse box that is attached to the battery wasn't torqued properly although the green tabs showed proper torque. This was the case with my AT4. There was also a notice from GM Canada about issue with computer so they changed that out.
 

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