[wilsond3010]

New to forum forgive if this been covered

Wondering if any one else having these issues.

1. HVAC intermittently display's grey bar on 8inch display panel
Mainly seen with remote start used the command start and go to car
press the start button
Turn or press any the HVAC options and get a grey bar displayed on bottom screen instead of what you pressed
Initially no error code detected. Until deep dive and error code on motherboard
HVAC control boards have been replaced and then a few weeks later did it again this time no error codes.

2. Check engine light low turbo boost. Only 8000km on the clock
Waiting for it to go in for further assessment

 

[wilsond3010]

The Turbo Code for me was P0299 and typical the day it's going into the shop ran with check engine light until I get there and after another stop and start it goes away.
Had it sitting in friend work shop for 8 hours yesterday and still had the light maybe something with the -22 centigrade just now and causing blockage?
However it's got a weird cold air on heater when idling

My HVAC issue was intermittent and I had to take it back a couple times before they finally was able to diagnosis the issue was the hvac controller or mother board

 

[wilsond3010]

So they update I got from the dealership for my issues.

The turbo issue – frozen moisture build up, so we’ve removed the components for cleaning and drying, and reassembled with a ‘winter-front’ behind the grille.

Not sure I had mentioned the heating issue when idle

heating - we tested the thermostat and found its exceptionally slow to get to heat (in fact it doesn’t even sound like it reached optimal temperature at all) so that would explain your colder-than-sedan issue, as well as your cold-while-idling and poorer-than-sedan fuel economy problems.

 

[wilsond3010]

Thanks I will PM you.

Dealership has confirmed the HVAC has been pushed back to GM Engineering and they are working on a Software fix but no ETA Seems I am not only one after all

 

[wilsond3010]

18 months and still having HVAC Grey bar this is getting frustrating

HVAC intermittently display's grey bar on 8inch display panel
Mainly seen with remote start used the command start and go to car
press the start button
Turn or press any the HVAC options and get a grey bar displayed on bottom screen instead of what you pressed
Initially no error code detected. Until deep dive and error code on motherboard
HVAC control boards have been replaced and then a few weeks later did it again this time no error codes.