GM Master Tech needed - Dealer installed update cause failure

[jbshoo]

So I’ve included this in the ‘service rear camera’ post but I’m wondering if there are any GM techs out there can provide some guidance,  I brought my vehicle into my dealership yesterday due to the error on the screen and also check my align,ent.  They pulled the codes on the ecu and said there is a software update that will fix the error noted above,  1 hour later they reported that the truck is more broken now then when you brought it in.  When the tech loaded the update, it appeared not to finish/complete.  When they turned the key, the screen was black on the radio head unit,  after 20 mins, they retried again, still appeared not to finish, and now the traction control light is now illuminated on the dash. And the radio backlight is on.  They kept my truck last night and disconnected the battery in hopes that this would clear something???

 

same problem this morning,,go figure,,

 

any thoughts?  They apparently called Gm engineering this morning,, I’m awaiting an update,  I’m thinking they overwrote other files or an ecu failure.  Brand new Denali with 1800 miles.. not pleased.

Edited October 12, 2019 by jbshoo

[tbarn]

It happens. Sucks just the same though. For all of you that want all the latest updates, take note of this issue. Modules sometimes become bricks from programming errors. Or at least take a looooong time to resolve.

[newdude]

Sounds to me like they skipped a step in the program procedure or didn't quite follow a step. 

 

I know that the radios on these have to be programmed rather specifically:  https://gm-techlink.com/?p=11215

[jbshoo]

Update, dealer called, the shop Forman is working with Gm, they tried so more reprogramming, verdict will be out in the a.m. when I call them to see if what they did is successful.. 

 

personally, I think they skipped a step too..and will be hand delivering the instructions included in the link above if it’s still not working in the morning,

my patience is growing thin by the hour..

 

 

[jbshoo]

So I hand delivered  the software installation directions to the dealer yesterday, and the feeling I’m getting is that they did not install the code according to the correct steps.  It clearly states that damage cane be done if not installed  in the correct order to a module,  now the dealer is in my opinion scratching their heads as the head unit is blacked out, so they can not navigate to the screens required to initiate a correct update, in the right order.

 

so now what??  They called gmc engineering.. still waiting an update.. 5 days now and totally disgusted,

 

Any experience out there who could provide insight on what module they should be looking for?  Or any other guidance,  pretty bad when you need to school the place working in your   68k truck

 

”Several radio-related performance issues may appear if all steps are not completed when programming the radio on 2018-2019 Regal, ATS, CTS, XTS, Terrain; 2019 CT6, XT4, Blazer, Camaro, Colorado, Equinox, Malibu, Silverado 1500, Volt, Canyon, and Sierra 1500 models equipped with the Infotainment 3 System (RPO IOS, IOT, IOU). (Fig. 15) Failure to follow all programming steps will result in repeat repair attempts and possible control module damage”

Edited October 12, 2019 by jbshoo